Windows error 0xFFFFFFFF, -1

Detailed Error Information

HRESULT analysis[1]

FlagsSeverityFailure
Reserved (R)true
OriginCustomer

This code was defined by a third party software company, and may mean different things for different software. Contact the software author for more information about this error.

NTSTATUStrue
Reserved (X)true
FacilityCode4095 (0xfff)
Error Code65535 (0xffff)

Questions

19votes
1answer

Setting up a Bluetooth PAN

I am trying to create a Bluetooth PAN between two devices where I can access REST based web services over the Bluetooth connection. I have had some success with various proof of concepts (both Bluetooth legacy and Bluetooth Smart) but I am having problems trying to create a Group network [...] read more
linux
networking
wireless-networking
bluetooth
pan
9votes
2answers

Finding the exact bounds of text

I need to know the exact bounds a piece of text -- the equivalent of getTextBounds for Android. I realize this goes somewhat counter to Flutter's design, but I am using text in a non-traditional way (as if the text were, say, embedded into an artistic picture at a precise [...] read more
text
flutter
9votes
1answer

Cisco ASA Site-to-Site VPN Dropping

I have three sites, Toronto (1.1.1.1), Mississauga (2.2.2.2) and San Francisco (3.3.3.3). All three sites have ASA 5520. All the sites are connected together with two site-to-site VPN links between each other location. My issue is that the tunnel between Toronto and San Francisco is very unstable, dropping every 40 [...] read more
cisco
cisco-asa
cisco-vpn
9votes
5answers

How to dump memory to a file in gdb (osx)? Need to rescue my work

I need to know how I can dump memory in Safari.app, to a file. I've entered gdb attach 6741 (my safari PID). Now what? I tried searching for help on gdb on google, but I couldn't find anything that told me what to do, even when searching for "how to [...] read more
macos
gdb
8votes
4answers

Remove padding in Flutter Container > FlatButton

I am looking to remove the default margin of the FlatButton but can't seem to set/override it. buttons with padding [https://i.stack.imgur.com/auKR7.png] Column(children: <Widget>[ Container( children: [ FractionallySizedBox( widthFactor: 0.6, child: FlatButton( color: Color(0xFF00A0BE), textColor: Color(0xFFFFFFFF), child: Text('LOGIN', style: TextStyle(letterSpacing: 4.0)), shape: RoundedRectangleBorder(side: BorderSide.none)))), Container( margin: const EdgeInsets.only(top: 0.0), child: FractionallySizedBox( [...] read more
flutter
8votes
2answers

Problem switching to v8086 mode from 32-bit protected mode by setting EFLAGS.VM to 1

I'm in 32-bit protected mode running at current privilege level (CPL=0). I'm trying to enter v8086 mode by setting EFLAGS.VM (Bit 17) flag to 1 (and IOPL to 0) and doing a FAR JMP to my 16-bit real mode code. I get the current flags using PUSHF; set EFLAGS.VM (bit [...] read more
assembly
x86
nasm
x86-64
osdev
8votes
2answers

Strongswan (IKEv2) connection established, but no traffic routing

I've seen this sort of question posted a few times before, but so far, none of them have solved my issue. I'm trying to set up an IKEv2 VPN on my Ubuntu Server to use with my Windows Phone using Strongswan. The connection seems to be set up correctly, but [...] read more
ubuntu
ipsec
strongswan
vpn
8votes
3answers

Corrupted NTFS Drive showing multiple unallocated partitions

My external hdd with a single NTFS partition was accidentaly plugged out (kids!)... and is now corrupted. Iv tried running ntfsfix - with no luck - output below.. When I look at the disk under disk management in Windows 7 it shows up as having 5 partitions 2 of which [...] read more
external-hard-drive
ntfs
filesystem-corruption
7votes
3answers

SQL Server 2012 with account NT Service\MSSQLSERVER access is denied in domain

A few months ago we installed SQL Server 2012 in Windows 2008 R2 under the virtual account "NT Service\MSSQLSERVER", all good. A few days ago, one of the admins of the IT dept installed Full Text Search component to the SQL Server 2012 (the problem is he could not recall [...] read more
sql-server
sql-server-2008
domain
permissions
7votes
3answers

Disable IPv6 Loopback on Windows 7 64 Bit

I have a Windows 7 64 Bit machine, and I cannot find a way to disable the IPv6 Loopback. I looked at the article at How to disable IP version 6 or its specific components in Windows and shows how to set HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\DisabledComponents to various values – but none of [...] read more
windows-7
networking
6votes
4answers

How to put FloatingActionButton to Fragment?

How can I put my fab on my fragment? help please I'm getting errors such as. > android.view.InflateException: Binary XML file line #13: Error inflating class fragment in my fragment acticity. Well here are my codes. well the problem is in the getActivity().setContentView(R.layout.activity_ownerhome); #ownerhome.java public class ownerhome extends AppCompatActivity { [...] read more
java
android
android-fragments
6votes
1answer

FreeBSD IP aliases in different subnets and default outgoing IP address

I have a FreeBSD VPS that until recently had assigned 3 public ip addresses in a /29 subnet. When making outgoing connections, the IP address used was always the non aliased one ".20", however now I have added another block of 3 ip addresses in a different /29 subnet and [...] read more
networking
freebsd
ip-aliasing
6votes
1answer

ASA site-to-site IPSec vpn to linux ipsec-tools endpoints stops working after a random period of time

We swapped to ASA's over the weekend, and we replaced our VPN infrastructure which was previously based on openvpn and are now using IPSec between our ASA 5520's and our other sites that have linux (CentOS) routers. The VPNs connect just fine, but after a period of time the connections [...] read more
linux
cisco
cisco-asa
ipsec
racoon
5votes
1answer

a class method named ._() function in dart?

ive seen this code can anyone please explain to me what the AppTheme._() means, as ive read about its singleton class in dart but I really can't understand how it works. class AppTheme { AppTheme._(); static const Color notWhite = Color(0xFFEDF0F2); static const Color nearlyWhite = Color(0xFFFEFEFE); static const Color [...] read more
flutter
dart
5votes
1answer

Enable TLS 1.2 in Windows Server 2012 running Exchange 2013 via IIS 8.0

I got some issues getting the TLS 1.2 protocol running on one of our Windows Server 2012 machines. I checked this using ssllabs.com by Qualys and also tested with a powershell script and the linux tool "cipherscan". The server hosts one Exchange 2013 SP1 (CU4) Server, with IIS 8.0. The [...] read more
windows-server-2012
tls
exchange-2013
5votes
2answers

OpenVPN connection works but no gateway is assigned

i try to setup openvpn on a vps and I'm able to establish a connection to the server, but the gateway isn't assigned to the client. Here are my config files: client config: client dev tun proto udp remote foo.bar 1194 resolv-retry infinite nobind persist-key persist-tun ca ca.crt cert client1.crt [...] read more
vpn
configuration
openvpn
gateway
open
4votes
1answer

Why _umul128 works slower than scalar code for mul128x64x2 function?

I am second time trying to implement fast mul128x64x2 function. First time I ask the question without comparision with _umul128 MSVC version. Now I made such a comparison and the results that I got show that the _umul128 function slower then native scalar and handmade simd AVX 1.0 code. Below [...] read more
c++
x86
simd
avx
micro-optimization
4votes
1answer

In a MIPS assembly `addi` instruction, how is a hexadecimal immediate interpreted?

Is there is a standard or recommendation for how the addi instruction (and others) should be interpreted in assembly, when hexadecimal immediate values are used? Example: addi $t0, $zero, 0xffff I was expecting this to mean the same as addi $t0, $zero, -1 where 0xffff would be sign extended to [...] read more
assembly
mips
mars-simulator
spim
immediate-operand
4votes
1answer

My two-way trust with selective auth seems to behave opposite to a one-way trust

I'm not sure why I'm the only one running into this, I think it's a larger problem with Server 2012 and RDS protocols... With 2008 machines, you can use utilize a one way trust to authenticate across domains with the TSGateway service, but with 2012 it breaks when running across [...] read more
authentication
windows-server-2012-r2
active-directory
4votes
3answers

How to limit ZFS writes on NVME SSD in RAID1 to avoid rapid disk wear?

Currently I'm running Proxmox 5.3-7 on ZFS with few idling debian virtual machines. I'm using two SSDPE2MX450G7 NVME drives in RAID 1. After 245 days of running this setup the S.M.A.R.T values are terrible. SMART/Health Information (NVMe Log 0x02, NSID 0xffffffff) Critical Warning: 0x00 Temperature: 27 Celsius Available Spare: 98% [...] read more
zfs
ssd
proxmox
nvme
4votes
0answers

Block incoming traffic in bonding mode when primary interface is down

My server running on latest kernel (4.4.6) has configured a bond device (bond0) with two enslaved interfaces eth0, wlan0 with primary interface eth0. cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011) Bonding Mode: fault-tolerance (active-backup) Primary Slave: eth0 (primary_reselect always) Currently Active Slave: wlan0 MII Status: up MII [...] read more
linux
iptables
firewall
bonding
4votes
0answers

Issue installing IE11

I've been using WSUS to roll out IE11, there's a few stranglers that IE11 will not install and I've started looking into. Here's what I've done. 1. Confirmed all prerequisite updates have been done. 2. I'm using the x64 bit package of ie11 and only using x64 servers and workstations. [...] read more
windows-server-2008-r2
windows-7
wsus
internet-explorer-11
4votes
1answer

System Account Logon Failures every 30 seconds

We have two Windows 2008 R2 SP1 servers running in a SQL failover cluster. On one of them we are getting the following events in the security log every 30 seconds. The parts that are blank are actually blank. Has anyone seen similar issues, or assist in tracking down the [...] read more
windows-server-2008
security
windows-event-log
failovercluster
4votes
2answers

How can I get FreeNAS to respond to libvirt shutdown requests

I have a KVM VM of FreeNAS 0.7.1 Shere (revision 5127) running on Ubuntu Server 10.04 and I'm unable to convince the VM to shutdown from the host virsh shutdown freenas I would expect this to send some ACPI? trigger to the VM and FreeNAS then do what it's told. [...] read more
ubuntu
kvm-virtualization
electrical-power
freenas
4votes
1answer

Marking packets with iptables with a NAT

I have to write bash scripts for a router to control bandwidth limitation for a given user on a given domain name. For this, I'm using iptables to mark the packets incoming from a restricted domain to a user ip address in the private network. With each couple user_ip/domain_ip I [...] read more
linux
iptables
routing
nat
qos
4votes
0answers

Direct3D crashes dxdiag in 32-bit but works fine in 64-bit mode

DxDiag crashes when I open it unless I bypass Direct3D. It works fine in 64-bit mode. I have a NVIDIA GeForce GT 525M, and I've tried updating (also uninstalling, reinstalling) my drivers. I've also tried doing the same with DirectX. How can I enable Direct3D for 32-bit? I've tried enabling [...] read more
windows-7
directx
direct3d
4votes
2answers

Is my mac hacked? Found weird things

I apologize for posting in length, but I thought being complete would be of more value: 20120822, my browser was not resolving a domain so I went into my terminal to check and lo-and-behold! I find these crazy commands remnant: mac-mini$ su Password: sh-3.2# sudo /Applications/TextEdit.app/Contents/MacOS/TextEdit /etc/hosts Mar 22 23:07:08 [...] read more
mac-mini
logmein
4votes
1answer

disabling ipv6 on windows 7 64bit

not sure what i am missing here.. every website suggests creating this reg key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\DisabledComponents as DWORD and setting its value to 0xFFFFFFFF i've done this, but when i reboot, my NIC adapter still shows IPV6 enabled. since i have 64bit version, i also tried setting this value as QWORD. [...] read more
windows-7
ipv6
3votes
2answers

Conversion from CIDR notation to IP address/subnet mask (dot-decimal)

/* * RFC 1518, 1519 - Classless Inter-Domain Routing (CIDR) * This converts from "prefix + prefix-length" format to * "address + mask" format, e.g. from xxx.xxx.xxx.xxx/yy * to xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy. */ static private String normalizeFromCIDR(final String netspec) { final int bits = 32 - Integer.parseInt(netspec.substring(netspec.indexOf('/')+1)); final int mask = (bits [...] read more
java
ip
subnet
james
cidr
3votes
1answer

Enable TLS 1.2 for specific Ciphers

We have a .NET application which calls an API that allows only TLS version 1.2. Server 2008 SP2. We ran following script on our server: # Copyright 2016, Alexander Hass # http://www.hass.de/content/setup-your-iis-ssl-perfect-forward-secrecy-and-tls-12 # # Version 1.7 # - Windows Version compare failed. Get-CimInstance requires Windows 2012 or later. # Version [...] read more
.net
ssl
encryption
windows-server-2008
tls1.2
3votes
2answers

Access to xmlhttprequest at from origin has been blocked by cors policy in Angular 6

I'm using Asp.Net Core Boilerplate framework for my server side project. Angular 6 using for the client side project. Server side project working without any errors. (Showing Swagger API - and APIs are also working) No any compile errors from Angular project. When run the angular project using Google chrome, [...] read more
c#
angular
asp.net-core
aspnetboilerplate
3votes
4answers

Safe low 32 bits masking of uint64_t

Assume the following code: uint64_t g_global_var; .... .... void foo(void) { uint64_t local_32bit_low = g_global_var & 0xFFFFFFFF; .... } With the current toolchain, this code works as expected, local_32bit_low indeed contains the low 32 bits of g_global_var. I wonder if it is guaranteed by the standard C that this code [...] read more
c
bit-manipulation
64-bit
implicit-conversion
bitmask
3votes
0answers

FreeBSD major update broke vpnc connectivity, incoming ESP traffic doesn't appear unencrypted on interfaces

I updated a FreeBSD box from 10.4 to 11.2-RELEASE-p4 recently and it seems to have broken the vpnc VPN connectivity. Here's the vpnc.conf:IPSec gateway 10.1.0.1 IPSec ID vpnuser IPSec secret su0hoh8liNgeiT8 Xauth username vpnuser Xauth password miuthei3Niew2ee Nat Traversal Mode none Noninteractive Following the interface configuration; em0 is the hardware [...] read more
freebsd
ipsec
cisco-vpn
vpn-client
3votes
0answers

High Performance AWS EC2 / RDS + Nginx + PHP-FPM setup

GENERAL DESCRIPTION OF THE ISSUE We're currently running an application on a PaaS type solution for PHP. Their solution is based on AWS cloud and due to the fact that their plans don't fit our scaling needs, we've decided to migrate to AWS directly the application is performing "well" ~100ms [...] read more
nginx
amazon-ec2
amazon-web-services
php-fpm
high-load
3votes
2answers

How to debug ip xfrm rules

I created ip xfrm rules on 2 machine and trying to pass traffic through the ipsec tunnel. The packet comes into the other end, encrypted, and disappears. I traced them through iptables, and here is the trace. 2015-11-27T14:50:21.442638+04:30 cfae kernel: [70234.667488] TRACE: raw:PREROUTING:policy:2 IN=eth0 OUT= MAC=00:0c:29:b7:97:49:00:0c:29:42:5b:e1:08:00 SRC=172.24.1.178 DST=10.60.60.31 LEN=128 TOS=0x00 [...] read more
ipsec
3votes
1answer

Same hardware/software, significant difference in performance

Introduction I have two sets of machines, set A and set B, with apparently the same hardware/software configuration, but with a significant difference in performance. Machines in set B are up to x4 faster than machines in set A. However, if I reboot a machine in set A, inexplicably it [...] read more
performance
hardware
3votes
1answer

Iptables u32 matching nat

I'm currently setting up IPtables to redirect certain UDP payloads to my application. Here is an example of what I have working so far: iptables -t nat -I PREROUTING -p udp -d {IPDST} --dport 27055 -m u32 --u32 '0>>22&0x3C@8=0xFFFFFFFF && 0>>22&0x3C@12=0x54536F75 && 0>>22&0x3C@16=0x72636520 && 0>>22&0x3C@20=0x456E6769 && 0>>22&0x3C@24=0x6E652051 && 0>>22&0x3C@28=0x75657279' -j [...] read more
iptables
linux-networking
3votes
2answers

CentOS reporting lower total memory compared others in AWS

I have a t2.medium instance running in AWS on the CentOS 7 AMI and I noticed in top and free it's basically reporting 3.45GiB of total memory. If I launch an instance with the AWS linux (I think I tried the RedHat one too) it reports about 4GiB of memory. [...] read more
amazon-web-services
memory
centos7
3votes
1answer

Windows 2008 R2 services not working

EDIT I spawned the Windows events logging service won't start issue to a separate question here I have a strange problem: 1. SQLAGENT won't start 2. Windows events logging service won't start Today I tried to copy a db to test some changes, and discovered that SQL server agent can't [...] read more
windows-server-2008-r2
sql-server-2008
service
windows-event-log
3votes
3answers

Setting up gateway on different subnet than IP address

My provider has a (stupid) setup where the IP address for the gateway is on a totally different IP range than the assigned IP address. They insist on doing this for whatever reason. I'm trying to get Windows Server 2012 R2 configured using a static route but have had no [...] read more
networking
routing
windows-server-2012
gateway
3votes
1answer

Packets not entering FORWARD chain

first of all, this is not an every-day routing issue. The setup is fairly complex, so let me state it before. I got a router with, lets keep it simple, 3 interfaces. eth0, eth1, eth2. eth2 is used for pppoe. eth0 & eth1 have the clients. Okay so far so [...] read more
networking
iptables
routing
policy-routing
3votes
2answers

HP P410 ADU (hpacucli) generates empty report

I'm trying to monitor hard drive's smart status. I've tried smartctl tools and HP's own hpacucli to generate ADU report. However, neither of them are useful. smartctl does not show values like Power On Hours or Hard drive temperature. ADU report shows them empty. What's the right way to monitor [...] read more
raid
monitoring
hp
hardware-raid
hp-smart-array
3votes
1answer

Linux port based routing : reponse packets discarded

I would like to use port-based routing on my Linux local gateway. Here is my network diagram : 192.168.42.148/24 192.168.42.1/24 192.168.44.2 192.168.44.1 +--------------------+ +----------------------------+ +----------+ | Workstation (eth0)-|----------------|-(em0) Local_GW (tun0)-|------------| VPN_GW | +--------------------+ | (rl0) | +----------+ +-------------|--------------+ 10.133.8.79/21 | | 10.133.15.254/21 | +--------------------+ | Provider_GW | +--------------------+ Provider_GW only [...] read more
linux
iptables
routing
iproute2
3votes
2answers

iptables NAT with multiple interfaces

I have an ubuntu 10 machine I'm trying to set up with NAT. eth0 is the WAN interface, that uses DHCP. eth1, eth2, eth3 are LAN interfaces. They are connected to 192.168.0.50, .51, .52 respectively. NAT through eth1 works great. On eth2/3, I get nothing -- "no route to host" [...] read more
iptables
nat
3votes
1answer

Black screen while installing Debian

I tried installing Debian with a netinstall CD-ROM on my custom-built PC. Everything is going fine until I choose any of the install options because then the screen turns black and I get no graphical feedback at all. The screen itself seems to get information though because it doesn't go [...] read more
installation
debian
3votes
2answers

Error installing IE11 - prerequisite update KB2834140

I'm trying to upgrade Internet Explorer my Windows 7 (x64) development VM from IE8 to IE11. Both the online and offline installers fail with a bland error message: enter image description here [https://i.stack.imgur.com/0dueo.png] The troubleshooter tells me nothing, but the IE11_main.log reveals: 00:04.524: INFO: Download for KB2834140 initiated. Downloading http://go.microsoft.com/fwlink/?LinkID=303935 [...] read more
windows-7
installation
internet-explorer
3votes
1answer

What does the "-->" notation mean in the output of ifconfig?

I have a VPN connection set up on my OS X machine, and when I run ifconfig in the terminal I get the following response: utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1500 inet 10.8.0.6 --> 10.8.0.5 netmask 0xffffffff Can someone help me understand what the --> symbol means? read more
networking
vpn
ifconfig
3votes
2answers

Sysprepped image will not complete setup

I'm having a problem installing/setting up an image. Background:I've created a Windows 7 Enterprise image (i.e. installed OS, installed applications, configured settings, etc.). Then I sysprepped it and captured/applied it with imagex (onto a computer with identical hardware as the original). When I boot up the new machine, windows starts [...] read more
windows-registry
setup
deployment
sysprep
3votes
2answers

How to use openvpn for browsing

I'm just starting out with VPN and OpenVPN. What I understand is that I when I have a vpn connection, it's like I'm on the same network as the server. Then I should be able to connect to the server via the local address (10.8.x.x). Next to that I should [...] read more
debian
vpn
openvpn
tunnel
bridged
3votes
2answers

Something very strange with network

I have Windows 7 and I have very strange thing with my network. Some time I was connected through wireless router and my IP was 192.168.2.103, router's IP was 192.168.2.1 and some other IP was 192.168.2.100. The last I get from page "active DHCP clients" of web interface of the [...] read more
windows-7
networking
2votes
3answers

FFMPeg exception setDataSource failed: status = 0xFFFFFFFF

I have 175 mp4 files. When I process file from index 0 to index 65 (or 66), I get exception: java.lang.IllegalArgumentException: setDataSource failed: status = 0xFFFFFFFF at wseemann.media.FFmpegMediaMetadataRetriever.setDataSource(Native Method) at com.jni.utils.Mp4ParserUsingFFMpeg.createThumbnail(Mp4ParserUsingFFMpeg.java:518) at com.example.readmdtfile.activity.MainActivity$createMp4Async.createThumbnail(MainActivity.java:71) at com.example.readmdtfile.activity.MainActivity$createMp4Async.doInBackground(MainActivity.java:55) at com.example.readmdtfile.activity.MainActivity$createMp4Async.doInBackground(MainActivity.java:1) at android.os.AsyncTask$2.call(AsyncTask.java:288) at java.util.concurrent.FutureTask.run(FutureTask.java:237) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) at java.lang.Thread.run(Thread.java:841) If [...] read more
exception
ffmpeg
2votes
1answer

Access array defined in inline assembler from C

I have an integer declared in Assembler, and I use it in C in the following way: asm( "number: \n" ".long 0xFFFFFFFF \n ); extern int number; int main(){ //do something with number } Now I want to declare a 32 byte array in Assembler. I tried the following: asm( [...] read more
c
gcc
assembly
x86
inline-assembly
2votes
2answers

Does JMeter fully support NTLM Authentication?

I am struggling to make JMeter to work with NTLM authentication. At the beginning I was provided with an URL and credential. When I tested the credential in Firefox and in Chrome I received the authentication popup and upon providing the credential I was authenticated. So I had created a [...] read more
java
jmeter
apache-httpclient-4.x
ntlm
apache-commons-httpclient
2votes
2answers

How to get username and mail to display in UserAccountsDrawerHeader in flutter

I am getting my response from the URL after login in but I can only print the data in my console but how to get the mail and name from the that response I have tried with the future response but when I get a future response but its returning [...] read more
flutter
2votes
3answers

How to assign byte[] as a pointer in C#

I have a function that generates a CRC check byte based on the content of any packet.The problem is in translating the function from C++ to C# C++ code: unsigned char GenerateCheckByte( char* packet, int length, unsigned long seed ) { if( !packet ) return 0; unsigned long checksum = [...] read more
c#
pointers
byte
2votes
1answer

QEMU Triple Faulting when enabling interrupts

I'm working on a simple operating system, and I'm currently trying to load the IDT. I'm not getting any errors during compilation, but QEMU is triple faulting when I try to enable interrupts. I have looked at the address in the EIP register with iHex, but it seems to be [...] read more
c++
c
assembly
kernel
2votes
1answer

Enable IPv6 in MariaDB in FreeBSD jail

I'm trying to set up a MariaDB 10.2 Server on a FreeBSD 11.2 Jail. The Server is running and accepts remote connections via IPv4 just fine. According to sockstat, it should also be listening on IPv6: db# sockstat | grep 3306 mysql mysqld 17516 177 tcp46 *:3306 *:* This is [...] read more
mysql
freebsd
ipv6
mariadb
2votes
2answers

Transparent HAproxy on ubuntu (amazon EC2)

I am trying to setup a transparent HAproxy load balancer using ubuntu 18.04 on amazon EC2. I got the HAproxy to work on a non-transparent mode, so now I am trying to add the changes required for the transparent mode, but I am getting 503 Service Unavailable No server is [...] read more
haproxy
transparent-proxy
2votes
0answers

How to get TOR hidden service to work with iptables

I'm running an Arch Linux server which acts as a TOR relay and I would like it to act as a hidden service as well (I want to provide .onion access to my services, I know running a relay next to a HS is not suitable for an anonymous service). [...] read more
iptables
service
arch-linux
tor
hidden
2votes
2answers

How to limit speed for every device per MAC address in the gateway via Linux command "tc"?

I have a gateway whose OS is Linux.Assume my downlink bandwidth is 100 Mbps. I want to limit the max download speed to 1Mbps for every device which uses this gateway.In other words, if there are 100 devices, every device can get 1 Mbps bandwidth in theory.I tried doing traffic [...] read more
tc
2votes
0answers

How to fix Apache2 w/ suPHP to scan the correct .ini directory?

Apache2 was reading the correct area for php.ini in /etc/php5/apache2 until suPHP was added to the system. Configuring suPHP_ConfigPath in /etc/apache2/mods-available/suphp.conf gets the correct php.ini loaded, but does not correct the directories to be scanned. How, and where, do I fix this so that Apache loads/scans/uses PHP from the original [...] read more
apache2
php
2votes
2answers

OpenVPN routing between static hosts

I have an OpenVPN server with successful static-key tunnels to two separate hosts - my laptop, and another server elsewhere on the internet. I have connectivity over both OpenVPN tunnels. How do I make it so the server with two tunnels routes traffic across its tunnels? Switching to server mode [...] read more
debian
vpn
routing
openvpn
2votes
5answers

OpenVPN client connects but can't access internet

I setup an Openvpn server on a centos box and I can get the client to connect (osx) but can't access the internet or even the local network. I thought maybe DNS but couldn't access any sites via IP. Any help would be appreciated. I will list my config files [...] read more
centos
iptables
openvpn
2votes
0answers

DHCP offer is unicast but DHCPACK is broadcast

My DHCP server broadcast DHCPACK 0xffffffff . it is not working on layer 3 dhcp relay agent . as it can not forward this broadcast message to my client. can any one help me from exactly the broadcast bit set ? should I send any parameter to dhcp server so [...] read more
dhcp
dhcp-server
isc-dhcp
2votes
1answer

nslookup fails inside freebsd jail

I posted on the freebsd forums. I've been trying all night and I've made some progress but still I can't connect to the internet from my freebsd jail. Please just give me a hint here. I get the following inside the jail if I do nslookup www.google.com : ;; connection [...] read more
networking
freebsd
bsd
2votes
3answers

How to configure an authoritative time server in Windows Server

I have a performance lab running behind a firewall, so none of the machines in the lab has internet access. All machines in the lab are part of a domain with the domain controller also present inside the lab. The problem is that some server's time are drifting heavily. Some [...] read more
windows-server-2003
windows-server-2008-r2
ntp
w32time
2votes
1answer

firewall-cmd - add-forward-port don't work

I have a KVM server (host) with multiple virtual machines (guests). My goal is my host forward port 222 to port 22 of a guest running an ssh service. This works... iptables -I OUTPUT -d 0.0.0.0/0 -j ACCEPT iptables -I FORWARD -d 0.0.0.0/0 -j ACCEPT iptables -I INPUT -d 0.0.0.0/0 [...] read more
firewall
port-forwarding
iptables
forwarding
firewalld
2votes
1answer

Windows: SSL/TLS connection reset after ClientHello (ECONNRESET / write:errno=10054)

I'm using Windows Server 2012 as a workstation. The problem is that HTTPS connection initiated by node.js randomly fails. Probably this is system-wide issue and not only node is affected, but it appears mostly with node. Because any HTTPS request can randomly fail, npm install is a lottery and for [...] read more
windows
networking
ssl
https
openssl
2votes
1answer

What can trigger a SIGPWR signal that interrupts a 'sendmsg' system call?

On a RHEL 6 host, I have a Cassandra server listening for TCP connections on localhost. In parallel, I have a client application that sends it requests. The client (C# Mono) uses sendmsg to send the serialized bytes. I consistently see the sendmsg return without having sent all requested bytes. [...] read more
linux
redhat-enterprise-linux
tcp
strace
system-calls
2votes
2answers

Windows 10 drops IKEv2 VPN connection to Cisco router in exactly 60 seconds after last data exchange

Update 3: 22 January 2017 I've narrowed down the update that causes this problem: KB3201845 OS Build 14393.479 from December 9 2016. I went through all these updates step by step. Looking at the changes files manifest, these files have been changed: * agilevpn.sys * vpnike.dll Other topics I've created: [...] read more
networking
windows-10
vpn
2votes
1answer

How to slow down traffic with tc?

I'm on Ubuntu 14.04; I'd like to learn the basics of traffic shaping, I made a simple script that should slow down my HTTP(S) traffic to ports 80 and 443. # usage: sudo ./filename.sh #delete existing rules # wlan0 is my WiFi tc qdisc del root dev wlan0 iptables -t [...] read more
wireless-networking
iptables
network-traffic
traffic-shaping
2votes
1answer

How do I configure DNS when sharing a VPN connection in linux?

I'm using a Linux computer (raspberry pi) to share a VPN connection over ethernet. I want the raspberry pi to connect to the internet normally (not over the VPN). I'm very close to getting it working, but I don't know how to configure the DNS for the eth1 network. Connection [...] read more
linux
networking
vpn
dns
dnsmasq
2votes
0answers

How can I get a Mellanox ConnectX-2 to work on this ASUS desktop motherboard?

People seem to be happy with second-hand Mellanox ConnectX-2s on Linux so I grabbed a pair. Both cards result in an network interface showing up on one computer but neither show up in the other computer. Working computer: * EVGA 120-LF-E650 desktop board * Ubuntu 16.04 LTS * Linux 4.4.0 [...] read more
linux
networking
network-adapter
2votes
1answer

Enable SCHANNEL Protocols in Windows Registry (Win7 & 2012R2) DisabledByDefault or Enabled?

I have enabled TLS 1.0/1.1/1.2 protocols on my local Win7 machine and 2012R2 server as well as disabled SSL 2.0/3.0 using the registry DWord value DisabledByDefault = 0 based on the following Microsoft support article: https://support.microsoft.com/en-us/kb/245030(see SCHANNEL\Protocols subkey...) But i noticed another TechNet article which seems to contradict this KB [...] read more
encryption
tls
authentication
cryptography
openssl
2votes
1answer

Routing subnet to specific routing table with fwmark, direct to ISP and VPN

Introduction I'm trying to set up a VPN on my router so that I have two routing tables. I want it so that all the filtering is done with iptables, and iproute just acts on the specific fwmarks, ie generic rules. It is an improvement of Routing a particular subnet [...] read more
networking
router
routing
iptables
openvpn
2votes
1answer

OS X - GPU Panic

For half a year, I've been experiencing random freezes/reboots on my MacBook Pro Retina Mid 2012 model. My current OS is OS X Yosemite, but I started experiencing the issue in the Mavericks era. The laptop has endured some occasional, unintended slight physical abuse, but nothing very serious. Just mentioning [...] read more
macos
gpu
kernel-panic
2votes
1answer

Computer tends to BSOD crash (in any browser) when using Flash based apps?

About a month ago my computer started experiencing crashes, at first it was just every once in a while, then it escalated to around 5 times a day. Typically it crashes when I access flash-based games and videos, but it has occurred at random, e.g. no sensible correlation between what [...] read more
windows-7
crash
flash
bsod
2votes
0answers

on xeon, does addq require 2 clock cycles?

How many cycles are required to add long ints on a xeon? from timing trials, it appears that 2 clock ticks are needed. /proc/info says model name : Intel(R) Xeon(R) CPU X5660 @ 2.80GHz sample c code (loop.02.c) unsigned long i, j=0; for(i=0; i<(0xFFFFFFFF);i++) j+=3; assembler code 21:loop.02.c **** for(i=0; [...] read more
clock
xeon
1vote
1answer

How to set Java home in JSch to execute a command?

I'm using Jcraft JSch to ssh into a remote machine and execute a command. As it's a non-interactive shell it's not finding Java home. How do I set Java home while using jsch? looking like ((ChannelExec) channel).setEnv("LANG", "UTF-8"); ((ChannelExec) channel).setEnv("JAVA_HOME", "/blah/java/J8.0_64/"); is deprecated? public String sendCommand(String command) { StringBuilder outputBuffer [...] read more
java
ssh
environment-variables
jsch
1vote
2answers

general protection fault when running os on iso

I have the following bootloader code which seems to run perfectly fine on a hard disk: [bits 16] [org 0x7c00] bootld_start: KERNEL_OFFSET equ 0x2000 xor ax, ax ; Explicitly set ES = DS = 0 mov ds, ax mov es, ax mov bx, 0x8C00 ; Set SS:SP to 0x8C00:0x0000 . [...] read more
nasm
qemu
iso
osdev
general-protection-fault
1vote
1answer

About the limitation of STM32H7 SPI in slave mode

I'm implementing SPI communication between two Nucleo STM32H743 boards. I've configured SPI in Full-Duplex mode, with CRC enabled, at the maximum SPI frequency (100MHz for SCK frequency). It's working fine as long as I'm doing only transmission from Master side and Reception from Slave side. Here is the code I'm [...] read more
stm32
spi
1vote
0answers

Having trouble compiling ffmpeg code in command terminal

I am having a bit of trouble compiling my c++ code in my terminal. I have ffmpeg installed as shown below. ffmpeg version n4.1 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04.1) configuration: --enable-gpl --enable-version3 --disable-static --enable-shared --enable-small --enable-avisynth --enable-chromaprint --enable-frei0r --enable-gmp --enable-gnutls --enable-ladspa --enable-libaom --enable-libass [...] read more
c++
ffmpeg
1vote
1answer

Capturing RTP Timestamps

I was trying a little experiment in order to get the timestamps of the RTP packets using the VideoCapture class from Opencv's source code in python, also had to modify FFmpeg to accommodate the changes in Opencv. Since I read about the RTP packet format.Wanted to fiddle around and see [...] read more
python
c++
opencv
ffmpeg
timestamp
1vote
1answer

QEMU networking and getty issues

I'm trying to create a minimalist setup for an ARM based virtual machine using qemu. I am following the following guide to do so. I am running QEMU with the following command qemu-system-arm -M vexpress-a9 -dtb ./linux-4.20.8/arch/arm/boot/dts/vexpress-v2p-ca9.dtb -kernel ./linux-4.20.8/arch/arm/boot/zImage -initrd rootfs.img --append "console=ttyAMA0" --nographic I am, for some reason unable [...] read more
embedded-linux
qemu
initrd
initramfs
1vote
1answer

Android: OnClickListener on an ImageView inside a list item in a custom Listadapter

I have custom Listview with a Cursoradapter. This is how my list looks like:my list [https://i.stack.imgur.com/b9xeM.png] (source: kepfeltoltes.hu) When I click on a list item, I want to play the recording and when I click on the info button I want to start a new Activity. I set an onClickListener [...] read more
android
listview
onclicklistener
android-cursoradapter
1vote
1answer

SD card initialisation; acmd41 fails;

I'm trying to init sd card and never get card ready. In details: There are dev board with a chip with a SD Host controller and micro SDHC UHS-1 card. Init sequence I'm following: * cmd0: arg 0x00. That is fine * cmd8: arg 0x1AA. Fine, 0x1aa is returned back. [...] read more
embedded
sd-card
1vote
1answer

How to Refresh App State When Date Changes?

I have an app that relies heavily on the date. I want to make sure the app refreshes and is up-to-date when it's a new day. I have been using the WidgetsBindingObserver class but I'm not sure if I'm doing something wrong. Basically if a user visit the app on [...] read more
flutter
dart
1vote
0answers

Optimize 128x128 to 256-bit multiply for Intel AVX[SIMD]

I'm trying to implement multiplication of 128 unsigned int on two 64 unsigned integers by Intel AVX. The problem is that non vectorised version works faster than hand-vectorised version. Here is my test benchmark. On my laptop i got next results: * AVX - 5200 * NonAVX - 1600 #include [...] read more
c++
simd
biginteger
avx
extended-precision
1vote
2answers

udev rule for usb device not working

sadly my udev rule won't work - I'm trying to make a symlink for a specific USB device. here the info about the device: /etc/udev/rules.d# udevadm info --query=all --attribute-walk --name=/dev/ttyUSB1 Udevadm info starts with the device specified by the devpath and then walks up the chain of parent devices. It [...] read more
linux
rules
udev
1vote
0answers

Read FileMapping Object in python (adapted from c++)

I have a process that writes a FileMap to shared-memory, and want to access it in Python. I however have no idea what shape the filemap has. I found a solution that works perfectly fine in c++, but there's a part I can't figure out because I'm not a c++ [...] read more
python
c++
shared-memory
1vote
1answer

Command view can't see any dbgprint message

I am analysing HEVD (a driver app, debug version) on my host Windows 10 1803 and I use Windbg Preview from Microsoft Store. The debug target is Win7 Pro x86 SP1 in VMWare. No matter I try ed Kd_DEFAULT_MASK 8 (or 0xf or 0xffffffff), or add DEFAULT (value 8 or [...] read more
windows
debugging
windbg
1vote
1answer

Why does my inline assembly code cause a triple fault?

I compile my code using GCC with the -masm=intel option. My kernel is loaded by a Multiboot loader like GRUB. I want to load the address of my GDT and then I reload all segment registers but this causes a triple fault (virtual machine restarts). This code works if I [...] read more
gcc
x86
inline-assembly
osdev
gdt
1vote
1answer

Is it legal to >>> 0 in order to keep bitwise operations as unsigned 32-bit?

For example, this is -1 a.k.a. 0xFFFFFFFF as a signed 32-bit: 0xFFFFF000 | 0xFFF However, this is this is 4294967295 a.k.a. 0xFFFFFFFF as an unsigned 32-bit: (0xFFFFF000 | 0xFFF) >>> 0 Can I rely on using this >>> 0 trick to keep my bitwise operations as unsigned 32-bit? Nothing in [...] read more
javascript
1vote
3answers

Weird Behavior of large float in printf() and assigned to an int

As per my calculation to convert the float values into the binary value stored by the computer (Sign, Exponent, Mantissa format), out of 32 bits, 1 bit is reserved for sign, 8 bits for Exponent. So only 23 bits are remaining to represent the number. So I am thinking that [...] read more
c
floating-point
int
printf
1vote
1answer

Z3Py solver from brute force script

I am working on a reverse-engineering challenge, the program takes a 32 bits hex number as input and do a serie of equations using a keyword, if the final result is 0 then the input is valid otherwise the input is wrong. I wrote a python brute force script that [...] read more
reverse-engineering
z3
z3py
1vote
0answers

ESP8266 32-bit aligned memcpy

The ESP8266 is running an xtensa core and to read data from flash storage all accesses must be performed with 32bit words. To perform this I wrote the following method: void memcpy_P(void * dst, const void * src, const unsigned int len) { char * _dst = ( char *)dst; [...] read more
c
esp8266
memcpy
micro-optimization
xtensa
1vote
2answers

Entity Framework Core - error: keyword not supported: '"server'

I am using Entity Framework Core 2.1. I scaffold my entity classes aka database first. When I try to get the data from one of the db tables, I get an error "keyword not supported for 'server'." I googled and it looks like my connection string is not correct. Here [...] read more
sql-server
entity-framework
.net-core
1vote
1answer

Design a background from 2 images in flutter

I'd like to create a a new stateless widget class that is defined by 2 images(top, bottom) and a line(defined by a function, e.g. (x){x+500}, a width(can be 0, if it shouldn't be drawn), and a color) separating the two images. For each pixel: * If the y position of [...] read more
flutter
background
flutter-layout
1vote
1answer

SetThreadContext x64 volatile registers

I have a problem with SetThreadContext. I can't change any of volatile registers (table here). data.context.ContextFlags = CONTEXT_FULL; SuspendThread(hThread); GetThreadContext(hThread, &data.context); ... CONTEXT* ctx = &data.context; ctx->ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER; ctx->Rax = (DWORD64)0x1000; ctx->Rcx = (DWORD64)-1; ctx->Rip = (DWORD64)allocatedMemory; ctx->R10 = (DWORD64)0x12345678; ctx->Rbp = (DWORD64)0xFFFFFFFF; SetThreadContext(hThread, ctx); ResumeThread(hThread); That [...] read more
c++
windows
multithreading
x86-64
cpu-registers
1vote
1answer

Questions about APIC interrupt

I'm following a book to write a linux like kernel, however, met problems with the APIC chapter. Before everything, I'll list my platform. I'm on Windows 10, using Virtual Box to run Ubuntu 18.04, and run test codes on bochs within it. Currently my understanding about APIC are as follow: [...] read more
assembly
operating-system
x86-64
apic
1vote
1answer

LED Won't turn off when output mode is set to LOW

I am making an alarm system using an ultrasonic distance sensor. It can be armed and disarmed using a remote, and I want a green led to be on when it is disarmed, and a red led to be on when it is armed. The red led works fine, but [...] read more
arduino
arduino-uno
led
1vote
1answer

Routing between OpenSWAN / IPSEC tunnels

I am trying to connect multiple Amazon VPCs (across regions) together using OpenSWAN and Amazon VGW's. The router instance can ping to hosts in both VPCs, and traffic is attempting to cross the router, but is getting dropped. EDIT: I see the counter XfrmInNoPols incrementing when the pings are not [...] read more
amazon-web-services
vpn
linux-networking
ipsec
openswan
1vote
0answers

Hyper-V Core Server 2019 ignoring power plan thresholds

I am attempting to tweak Hyper-V Core Server 2019 (host) power thresholds, however my attempts have failed so far. Scenario The newly created Hyper-V 2019 Server (part of Workgroup, not yet a Domain) has been attached to an external UPS. Battery status is provided through a USB cable. The UPS [...] read more
hyper-v
ups
1vote
1answer

IIS Site breaks after disabling SSLv3

I am trying to disable SSLv3 on a 2008 R2 web server that runs IIS 7.5 but as soon as I disable SSLv3 and reboot, the website is no longer reachable. I ran a packet capture with SSLv3 still enabled and my client is establishing a TLS 1.2 connection so [...] read more
windows-server-2008-r2
ssl
iis-7.5
tls
poodle
1vote
0answers

Windows Task Scheduler claims successful execution despite return code of -1 (0xffffffff, 4294967295)

Having a very strange case here, where a windows task scheduler job executes a C# console application at a specific time, that returns -1 in case of an error. The job is configured to rerun itself if an error occurs. The console app fails and returns the error code. The [...] read more
windows
scheduled-task
.net
console
1vote
0answers

Enabling TLS 1.1/1.2 on Windows Server 2008 SP2 still not possible

first for those of you, who might think, this question has been asked so many time before so it is a useless duplicate... 1. I cannot (yet) comment on other questions, so my only option on this is to ask new question. 2. I've searched and read the following articles [...] read more
windows-server-2008
ssl
1vote
3answers

2018-08 Cumulative Update for Windows Server 2016 (KB4343887) Failing

I've been trying to update the Patches which is failing continuously enter image description here [https://i.stack.imgur.com/PDkYQ.png] When I click the Failed to Install, I popped with the below description > 2018-08 Cumulative Update for Windows Server 2016 for x64-based Systems (KB4343887) A security issue has been identified in a Microsoft [...] read more
windows-server-2016
windows-update
credssp
1vote
1answer

Amazon RDS SQL Server Express 2012 - Fail to log-in

I recently created a new RDS of SQL Server Express 2012. I have set the security to be publicly available and to accept all ports and incoming connections. From some reason, I fail to connect it using my three clients: - HeidiSQL - SQL Server Management Studio - java client [...] read more
amazon-vpc
amazon-rds
1vote
1answer

shape dropbox on linux router with tc and iptables

Another machine on my LAN is uploading to Dropbox and saturating my internet connection's upload bandwidth. When that happens my pings to 8.8.8.8 take 3000-6000ms. When dropbox is not uploading my pings to 8.8.8.8 are 45ms. I'm trying to simply slow down and de-prioritize forwarded traffic to/from Dropbox on my [...] read more
traffic-shaping
qos
tc
htb
1vote
2answers

Ubuntu: updated mainline kernel, now drops to initramfs

I attempted to upgrade our system's mainline kernel and am now dropping into initramfs. < update>: The commands I used were: apt-get update apt-get upgrade apt-cache search linux-image //grabbed last entry apt-get install linux-image-4.4.0-67-generic < /update> I have researched the topic and found that I should be able to access [...] read more
ubuntu
boot
kernel
grub
initramfs
1vote
2answers

Kerberos Failure Audit Event Id 4769 on Domain Controller

I have an average of 17-18 failure audit events per hour recorded in the Security event log of a Windows 2012R2 domain controller, related to attempts of a Windows 2008R2 member server to obtain a Kerberos service ticket A Kerberos service ticket was requested. Account Information: Account Name: TORPDC01$@ACME.COM Account [...] read more
windows-server-2008-r2
windows-server-2012-r2
kerberos
1vote
0answers

iptables SNAT not honoring original port intermittently

I have a mark/mangle/SNAT setup that has been working great for years. However, when trying to use this same setup for DHCP requests, it intermittently fails: *mangle -A OUTPUT -p udp -m udp --dport 67 -j MARK --set-xmark 0x7/0xffffffff #... *nat -A POSTROUTING -m mark --mark 0x7 -j SNAT --to-source [...] read more
iptables
routing
1vote
2answers

"Service Unavailable" on fresh installation of OS and IIS 6 no matter what I try

I recently installed Windows Server 2003 on a virtual machine and then added the IIS role. (The reason for using an old OS is to make some old software work - Crystal Reports web server component) I have not yet added any pages/apps to the website (except one very simple [...] read more
windows-server-2003
iis-6
1vote
1answer

Can't connect to AWS instance after import with stock Centos7

I am trying to import a Centos7 based VM into Amazon AWS. The VM was created with the Centos7 minimal ISO installed into VirtualBox. Networking in the VM works fine locally before trying to do the import. I am using the EC2 command line tools to do the import: ec2-import-instance [...] read more
amazon-ec2
amazon-web-services
centos7
import
1vote
1answer

Out of 2 VMs and their 1 host, only 2 at a time are reachable from the LAN

I have a VMware vSphere hypervisor set up with two VMs. I need to be able to reach the host (for configuration, etc.) as well as both VM's from my client (which is also in the same subnet). I want to set up a PoC Hadoop cluster, and the client [...] read more
networking
vmware-esxi
1vote
3answers

Windows Server 2003: Backup Failed

I am having trouble backing up my server. I back up to an external hard drive, and up until now, I haven't had any problems with it. But today my backup failed. Here is the report from the backup log: Backup Status Operation: Backup Active backup destination: File Media name: [...] read more
windows-server-2003
backup
vss
1vote
0answers

Policy routing local user's traffic down a tunnel

I've got a Linux based Firewall/Router running iptables and SNAT for traffic passing through it to the Internet via a single uplink - This is working fine. There is also a small number of applications running on this server which also work fine. I've also got an OpenVPN client running [...] read more
iptables
routing
openvpn
linux-networking
1vote
1answer

How to debug intermitent network outage on Citrix XenServer

I have two Citrix XenServers in a pool. Both have a NIC for Management, a NIC for the SAN and a NIC for the VMs to connect to the network. The NIC for the VMs (eth3) has multiple networks configured for the VMs with different VLAN IDs. This has been [...] read more
xenserver
1vote
0answers

Freebsd, ipfw sched - config type = QFQ get frozen

I have some freebsd soft-router $uname -r 8.2-STABLE code for ipfw: pipe 50 config bw 70Mbit/s sched 50 config type QFQ queue 502 config sched 50 weight 1 mask dst-ip 0xffffffff queue 501 config sched 50 weight 9 mask dst-ip 0xffffffff add 01501 queue 502 ip from 10.32.0.0/14 to 10.32.0.0/14 [...] read more
freebsd
traffic-shaping
ipfw
1vote
2answers

OpenVPN Network Unreachable

I'm working to set-up a VPN access to a group of virtual machines at Linode., the topology looks something like this: db.example.com LAN: (eth0:0) 192.168.154.127/255.255.128.0 utility.example.com LAN: (eth0:0) 192.168.164.229/255.255.128.0 And, more servers on the LAN with addresses in the same range. The utility server is hosting the OpenVPN Here's my [...] read more
ubuntu
mac-osx
routing
openvpn
1vote
1answer

Apache22 on FreeBSD - Starts, does not respond to requests

I'm running Apache 2.2.17 with the peruser MPM on FreeBSD 8.2-RC1 on Amazon's EC2 (so it's XEN). It was installed from ports. My problem is that, although Apache is running, listening for, and accepting connections, it doesn't actually respond to any or show them in the log at all. If [...] read more
apache-2.2
freebsd
1vote
1answer

MDADM Array Being Limited to 2.0TB

I have an MDADM array with four 1TB disks in a RAID5 configuration. Here's the relevant part of mdadm --detail /dev/md1: Version : 00.90 Raid Level : raid5 Array Size : 2929537920 (2793.83 GiB 2999.85 GB) Used Dev Size : 976512640 (931.28 GiB 999.95 GB) Raid Devices : 4 Total [...] read more
ubuntu
software-raid
mdadm
filesystems
1vote
3answers

Why is it necessary to set a netmask of 255.255.255.255 for “alias” addresses in FreeBSD?

From FreeBSD handbook on the topic of virtual hosts: > For a given interface, there must be one address which correctly represents the network's netmask. Any other addresses which fall within this network must have a netmask of all 1s (expressed as either 255.255.255.255 or 0xffffffff). Can anybody explain why [...] read more
networking
freebsd
alias
interface
1vote
1answer

NetLogon and RPC Errors

Situation: Co-located DCs connected by T1 to client working location. The T1 is averaging at about 2/3 usage. All 1 Active Directory. I am trying to deploy a start-up script to clients at the working location though GPO. It seems to work on some computers and not on others, but [...] read more
domain-name-system
active-directory
group-policy
netlogon
1vote
0answers

Find cause of BSOD

Recently, I started getting BSODs a few times a week. I have a hunch that they are related to the display driver/docking station (I'm using IBM T480) because they seem to happen around the time I connect/disconnect to the docking station and more importantly, I don't actually see the BSOD, [...] read more
windows-10
bsod
1vote
0answers

Missing memory in linux ubuntu 16.04 system

I've been struggling with this problem for quite some time and am completely out of ideas. I have 8GB memory installed, but ubuntu sees only 3.2 GB. Hardware: Mother Board Information Intel DG965SS Processor Information Socket Designation: LGA 775 Type: Central Processor Family: Core 2 Manufacturer: Intel(R) Corporation ID: F6 [...] read more
linux
ubuntu
memory
1vote
1answer

Network interface for VPN connection explanation

I'd like to know exactly what is happening when I create a connection with my company's VPN. When I connect (using OpenVPN), I see the following network interface by using ifconfig: utun3: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1500 inet 10.8.0.18 --> 10.8.0.17 netmask 0xffffffff This looks different from other network interfaces in that [...] read more
vpn
ifconfig
1vote
0answers

The system time interval between Arm and Ubuntu

Problem Description: With Arm machine as a Server, with Ubuntu as a Client, Server via the Client send time package to sync that time, after synced time, Comparing their time, I found that with a continuation of the time, the time difference is bigger and bigger, I suspect that may [...] read more
linux
ubuntu
1vote
1answer

Codec and setting for lowest bitrate ffmpeg output

I need to convert my input audio file to the lowest possible size to transfer it over a radio transmitter. Now with the AAC codec and MP3 format I used 8kbps for bit rate, 16 kHz for sampling rate and 1 channel, and my output data is about 3kb per [...] read more
audio
ffmpeg
android
mp3
1vote
0answers

SOME/IP length error in trace window when sending SOME/IP messages from CANOE using CAPL script

I am getting SOME/IP length error(but getting correct data) in trace window when sending SOME/IP messages from CANOE using CAPL script. I think i am missing any settings that should be done in Canoe. Can anyone suggest a possible reason for this? and how to solve this? The code used [...] read more
networking
1vote
0answers

GRUB2 fails to boot multiboot compliant kernel that worked with GRUB Legacy

I have been trying to port a non-Linux mostly multiboot 0.6.96 compliant (the multiboot header is past 8 KiB) 32-bit elf kernel from GRUB Legacy to GRUB2. Currently, the kernel and GRUB are placed on a USB which is used to boot a different computer via the BIOS, like a [...] read more
boot
usb
grub
1vote
0answers

Error 582 while trying to access Windows Features

Today went to turn on the Hyper-V feature in the "Turn Windows Features On and Off" settings, but the dialogue would always just load for like 20 seconds then crash my machine. I looked up alternative ways to view/access the Windows Features and found you could do it from DISM [...] read more
windows-10
dism
1vote
1answer

Windows 7 OK button on Copy To dialog doesn't copy profile

So I am attempting to copy a User Profile to the default profile. I am using WinSpy++ to enable the disabled "Copy To" button - this process works on a stock laptop I have here. However, this does not work in a customised image I have with a fair amount [...] read more
windows-7
windows-registry
user-profiles
event-log
windows-embedded-7
1vote
2answers

How to add routing for 2 VPN connections?

I am trying to setup second VPN connection over the first one, which is my only option at the moment. The first VPN connection works fine(utun1), providing me internet access and it looks like this: Internet: Destination Gateway Flags Refs Use Netif Expire 0/1 10.56.10.5 UGSc 0 0 utun1 default [...] read more
networking
macos
vpn
routing
1vote
2answers

Mount ancient PATA disk (from a 386) to restore files (ATA 1, or older)

I have a PATA disk from a 386 laptop (1995?) which I would like to get files off. It is a Seagate 9096A, and is working. Using the old laptop is not possible. I have tried a USB - 2.5" PATA adapter, but it failed to properly interface with the [...] read more
hard-drive
1vote
1answer

Semi-disconnected network drives Windows 10 after timeout

I'm using Windows 10 in our company for a couple of weeks. Using the GPO (I'm a domain admin myself) we added some network drives for all users of our domain. This works fine. But.... For some reason, after a while my network drives are semi-disconnected. I use the word [...] read more
windows-10
network-shares
connection
1vote
0answers

Web Services for authentication over SSL failed due to TLS 1.2 on Windows Server 2012 and IIS 8

There are a SSL vulnerability called POODLE discovered by Google team in SSLv3 protocol. So uses of SSLv3 is not secure to use. Now its recommended to use TLS 1.2. We have IOS applications that are using web services over SSL for login to app. Apps started throwing error as [...] read more
login
ssl
windows-server-2012
https
web-services
1vote
1answer

linux drops packet when trying to route it - why?

I track packets using LOG targets for all chains of all tables and the last chain I see my packet in is the POSTROUTING chain of the mangle table: mangle_PREROUTING: IN=eth0 OUT= MAC=00:16:3e:0f:01:00:00:16:3e:0f:02:00:08:00 SRC=10.2.1.2 DST=10.1.1.2 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=60912 PROTO=ICMP TYPE=0 CODE=0 ID=41230 SEQ=1 As off http://inai.de/images/nf-packet-flow.png, I expected [...] read more
networking
routing
iptables
1vote
0answers

Higher resolution not available Ubuntu 14.04 on ESXi host

The maximum resolution available for my Ubuntu 14.04 vm is 1360x768. However, the max resolution for my Ubuntu 16.04 is 2560x1600. Both are running on the same ESXi host with the same video card settings. Both have the latest version of VMware tools installed. The physical monitor I am accessing [...] read more
ubuntu-14.04
esxi
1vote
1answer

How to set up dual quadro cards on RHEL 5.5?

I have a RHEL 5 workstation with 2 nvidia Quadro FX4500 cards, with one display attached to each card. After doing a clean install of RHEL 5.5, the second display doesnt work (it worked ok in RHEL 5.2). Neither separate X screens nor Xinerama are working. The kernel version is [...] read more
multiple-monitors
redhat-enterprise-linux
nvidia-quadro
1vote
0answers

Is my NVIDIA GT 540M having a hardware failure?

I'm using a Sager NP5160 laptop, which has an NVIDIA GT 540M dGPU as well as integrated graphics. I'm dual-booting Windows 7 and Linux Mint. I've recently noticed issues with games not performing as well as they should when I switch to balanced mode (from UMA mode) in Windows 7. [...] read more
graphics-card
hardware-failure
nvidia-geforce
discrete-graphics
1vote
0answers

Mac not setting routes on openconnect with vpnc-client

I'm trying to connect to a VPN on my Mac, but for some reason routes aren't being set, even though they seem to be set by the vpnc-client script. root@machost:/Users/username# cat .openconnect authgroup=AUTHGROUPHERE user=USERHERE script=/usr/local/bin/vpnc-script no-cert-check #background #passwd-on-stdin root@machost:/Users/username# openconnect --config=.openconnect HOSTHERE POST https://HOSTHERE/ Attempting to connect to server 1.1.1.1:443 [...] read more
networking
mac
vpn
routing
cisco-vpn-client
1vote
1answer

What does netstat -r on OSX tell you about gateways?

I noticed the route table has a lot of entries I do not understand. The route tabel is: Internet: Destination Gateway Flags Refs Use Netif Expire default 192.168.0.254 UGSc 28 0 en1 10.8.0.1/32 10.8.0.5 UGSc 1 2 tun0 10.8.0.5 10.8.0.6 UH 2 3 tun0 127 localhost UCS 0 284 lo0 [...] read more
macos
networking
vpn
routing
netstat
1vote
1answer

Packets marked by iptables only sent to the correct routing table sometimes

I am trying to route packets generated by a specific user out over a VPN. I have this configuration: $ sudo iptables -S -t nat -P PREROUTING ACCEPT -P OUTPUT ACCEPT -P POSTROUTING ACCEPT -A POSTROUTING -o tun0 -j MASQUERADE $ sudo iptables -S -t mangle -P PREROUTING ACCEPT -P [...] read more
iptables
openvpn
iproute2
1vote
4answers

Mac OS X: finder window keeps opening by itself and stealing focus

I have a Macbook with Mac OS X 10.4.11 here, with an annoying problem. After starting the computer and logging in, the finder keeps stealing focus. You can go back to your working app, but a minute later, it steals focus again. Even as I'm typing this message, I had [...] read more
mac
finder
focus
1vote
0answers

Auto-mount all USB-devices at same USB socket to same mountpoint

* I have a small computer with 2 USB sockets : A and B. * I want any external USB disk, attached to socket A - to be mounted as " deviceA" * I want any external USB disk, attached to socket B - to be mounted as " deviceB" [...] read more
linux
ubuntu
usb
debian
automount
1vote
0answers

Using TC from iproute, unable to match canid

I'm trying to use tc from iproute2 to prioritize packets sent to a canbus. Before doing so I read this guide about the issue: http://rtime.felk.cvut.cz/can/socketcan-qdisc-final.pdf Even using the exact examples from that pdf, I'm not able get any of the filters to get a match. My current version of kernel [...] read more
linux
networking
iproute2
1vote
0answers

Why did my ubuntu machine leave suspend?

Sometimes I come upstairs and my computer has left suspend and is booted or booting or whatever. Is there a log somewhere that will show what caused it to leave suspend? (ie mouse, keyboard, magic packet, power button?) This is what I see in dmesg: [191069.614821] init: anacron main process [...] read more
linux
ubuntu
hibernate
1vote
1answer

MFT / NTLDR / NTFS (external drive) damaged after ntfsresize (Linux)

I have had an external USB drive attached to a RaspberryPi (headless), 1.5 TB Volume, 100% partition NTFS. During this question Creating ext4 partition from console, my goal was to change the overall fs to ext4 by shrinking the ntfs partition to 50%, copy all files to the new partition [...] read more
linux
ntfs
mft
ntldr
ntfsresize
1vote
1answer

How do I stop Spotify from crashing?

I am using Spotify on wine on Linux (Ubuntu). It worked fine before, but after I uninstalled and re-installed it, for some reason every time I run it, it doesn't work. It crashes after I log in. When it crashes I can see the Spotify window. When it crashes, Spotify [...] read more
linux
ubuntu
wine
spotify
1vote
0answers

Mac crash report info - what can I learn from it?

My Mac (MacBook Pro, 10.7.3 OS) is crashing a couple of times a day. I started this behaviour just recently, and for no apparent reason. I've done a disk check and it all seems fine. When it crashes, the screen goes black and I have to long-press the power button [...] read more
macos
mac
crash
1vote
0answers

Mac crashing with black screen on XCode install + random other times

I have a Macbook Pro bought over a year ago without extended warranty. Lately it has started crashing as follows - the screen goes black. The last note of the music (if playing, radio or iTunes) loops repeatedly. It will not go into in standby when screen is closed. Power [...] read more
mac
crash
xcode
1vote
4answers

Kernel Panic every time I open a print queue

Every time I open any printer queue I get a kernel panic and have to reboot. It's quite frustrating. I've tried removing/adding printers, clearing all caches with Onyx, repairing permissions, all manner of things to no avail. Any tips would be greatly appreciated! ==== CRASH REPORT ==== Interval Since Last [...] read more
macos
printing
osx-leopard
kernel-panic
0votes
1answer

Flutter - ClipPath

How to create the above custom clipPath widget? (I attached the screenshot) I tried but it's not exact output Clipper class class MessageClipper extends CustomClipper<Path> { final double borderRadius = 15; @override Path getClip(Size size) { double width = size.width; double height = size.height; double rheight = height - height [...] read more
flutter
dart
0votes
2answers

Put FieldManager at center of the screen in a BlackBerry app

I know about how to put field on the center of the screen with horizontally and vertically. However I got success with the field, but I want to set the VerticalFieldManager or HorizontalFieldManage to the center of the screen. My code is like below, but I am not able to [...] read more
blackberry
horizontalfieldmanager
fieldmanager
0votes
1answer

How can I initialise the GDT?

I'm making an operating system and I'm stuck at the GDT. I've tried different tutorials, such as http://www.osdever.net/bkerndev/Docs/gdt.htm and http://www.jamesmolloy.co.uk/tutorial_html/4.-The%20GDT%20and%20IDT.html, but my os crashes always. How can I fix this? I use grub so the kernel is already in protected mode. boot.asm: section .multiboot multiboot_start: dd 0xe85250d6 dd 0 dd [...] read more
x86
kernel
osdev
linker-scripts
gdt
0votes
0answers

How to smooth the irregular borders of png bitmap

I am trying to smooth the borders of png image like this. Before [https://i.stack.imgur.com/Rv0zV.jpg]After [https://i.stack.imgur.com/BbyKP.jpg] I have tried a lot but I cannot figure it out how to do it. These links did not helped much ( https://medium.com/@ali.muzaffar/android-why-your-canvas-shapes-arent-smooth-aa2a3f450eb5 ) and ( android: smooth out edges of random shape bitmap ). [...] read more
android
android-bitmap
smoothing
0votes
1answer

Disabling SPI peripheral on STM32H7 between two transmissions?

I'm still doing SPI experiments between two Nucleo STM32H743 boards. I've configured SPI in Full-Duplex mode, with CRC enabled, with a SPI frequency of 25MHz (so Slave can transmit without issue). DSIZE is 8 bits and FIFO threshold is 4. On Master side, I'm sending 4 bytes then wait for [...] read more
stm32
spi
0votes
0answers

Shellcode Without null bytes

I am trying to convert an assembly program into null-free shellcode. However, I am unsure how to go about this for certain instructions. Some of them way more complex than the examples I found in the web. I used a C program from the web as an example, then converted [...] read more
c
linux
assembly
buffer-overflow
shellcode
0votes
1answer

Does __NR_socketcall use a random port by default?

I'm not seeing where its setting a port in the code for the payload shell_bind_tcp_random_port $ sudo msfvenom --platform linux -p linux/x86/shell_bind_tcp_random_port -f raw | sctest -vvv -Ss 10000 -G shell-bind-tcp-random.dot graph file shell-bind-tcp-random.dot verbose = 3 No Arch selected, selecting Arch: x86 from the payload No encoder or badchars [...] read more
linux
assembly
x86
nasm
metasploit
0votes
1answer

ffmpeg RTSP over TCP, RTP timestamps are always zero

I'm trying to get timestamps from RTP packet. When I scan packets with Wireshark I get following output:rtp_packetI see that timestamps have incremented after several packets. Issue that I have as following: when I read timestamp value from RTPDemuxContext->timestamp (rtp_demux_context->timestamp) in C, the value is always zero for several cameras, [...] read more
c
ffmpeg
0votes
1answer

Android Flutter app crashed during stratup

I used this fit_kit(https://pub.dev/packages/fit_kit#-readme-tab-) for Flutter to fetch health data from iOS and Android, the iOS part seems to work just fine, whereas the Android app always crashed during startup. I have registered the application on Google Console and also Firebase. This the verbose for the flutter run -verbose nin.RevocationBoundService" [...] read more
android
flutter
0votes
2answers

How to add a system call to find the number of processes in xv6

I have added this function in proc.c file int getNumProc(void) { struct proc *p; int count = 0; acquire(&ptable.lock); for(p = ptable.proc; p < &ptable.proc[NPROC]; p++) { if(p->state != UNUSED) count++; } release(&ptable.lock); return count; } I have made all the necessary modifications in the following files: 1. defs.h 2. [...] read more
unix
operating-system
system-calls
xv6
0votes
0answers

Cannot post JSON data to node.js API with ESP32

I can post JSON data from Postman to node.js API, but when I post JSON data from ESP32 board I get the 400 bad request code. There is no network or firewall problem and occasionly my ESP restarts randomly during process. Down below the code about the POST process is [...] read more
json
http
post
arduino
0votes
2answers

What color does a fragment get if there are two vertices at the very same position with two different colors?

I have a question concerning the OpenGL rendering pipeline. I have recently been reading theory about the GLSL's Geometry Shader. I think I do understand the basics of how to emit new geometry and assign colors to the new vertices. I am, however, not sure what color a fragment would [...] read more
opengl
glsl
shader
geometry-shader
0votes
0answers

Write protection on STM32F779ii

I'm trying to erase flash for STM32F779II. The start up file starts with that section: { FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 1664K DTCMRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 128K SRAM1 (xrw) : ORIGIN = 0x20020000, LENGTH = 368K SRAM2 (xrw) : ORIGIN = 0x2007C000, LENGTH [...] read more
c
stm32
stm32f7
0votes
1answer

How to calculate MMIO GPIO addresses for devmem2/mmap

I am trying to access some MMIO GPIO addresses for LED control and battery monitoring. But I am not sure how to calculate the right addresses. The documentation states the following: COMMUINTY_BASE = Bus 0 Device 0x0d Function 0 Reg. 0x10 GPIO North Community PORT ID = 0xC5 GPIO North [...] read more
c
embedded
intel
mmap
gpio
0votes
0answers

WriteFile on Com port indicates Tx complete, but no data transmitted

I am using VS 2013 Professional in an MFC project I have been using my software to receive data from the com port for some time, but recently needed to add transmission capability The Init code is: BOOL PASCAL FAR SetupConnect(pCONNECTION pCon, pCOMCONFIG pCfg) { DCB dcb; pSERBUF pSB = [...] read more
windows
windows-10
visual-studio-2013
0votes
2answers

ASP.Net MVC C#: Failed to acquire token silently as no token was found in the cache. Call method AcquireToken

I am attempting to retrieve Azure AD user profile data via the Microsoft Graph API. I have set up a small Visual Studio MVC app using code examples from various sources, primarily Microsoft. In my ignorance, I thought this would be a fairly simple process. I have browsed other similar [...] read more
c#
azure-active-directory
microsoft-graph
azure-ad-b2c
microsoft-graph-sdks
0votes
1answer

Error trying to inherit from pandas DataFrame, when calling __init__

I want to inherith from pandas DataFrame, and initialize the child class with an empty dataframe import pandas as pd class MyChildDataFrame(pd.DataFrame): @property def _constructor(self): return MyChildDataFrame def __init__(self, *args, **kwargs): print("Iniciando " + self.__class__.__name__) super(pd.DataFrame, self).__init__(*args, **kwargs) The last line creates an error > init() missing 1 required positional [...] read more
python-3.x
visual-studio
0votes
1answer

ExoPlayer: "Internal runtime error" on certain PlayReady-protected assets

I'm working on an app for Android TV devices, which uses ExoPlayer as the video player and I'm using Smooth Streaming video with PlayReady DRM. The app is capable of perform key requests, etc. without any issues and most of the content is playing. I am, however, experiencing issues with [...] read more
android
android-tv
exoplayer
smooth-streaming
playready
0votes
1answer

HTML element in three.js globe

I have a globe built using three.js Refrene:http://callumprentice.github.io/apps/globe_manipulator/index.html I need to show a HTML div at a specific lattitude/longitude, can you tell me how to position the div at some specific lat/long? What have i tried: I am not even able to proceed with the conversion of lat lon to [...] read more
javascript
three.js
0votes
1answer

SSIS Send Mail task script with Visual Studio 2010

I am having a challenge with this send mail script in visual studio 2010. Here is the script: #region Namespaces using System; using System.Data; using Microsoft.SqlServer.Dts.Runtime; using System.Windows.Forms; #endregion using System.Text.RegularExpressions; using System.Net.Mail; using System.IO; namespace ST_dd466aa1cac943eb887bc0d48f753e68 { /// <summary> /// ScriptMain is the entry point class of the script. [...] read more
c#
visual-studio
visual-studio-2010
ssis
sendmail
0votes
0answers

Organize/Add Data into SQL Server Table using Visual Studio 2019 Node.js

So I was able to connect Node.js to SQL server and get a (poorly organized) display of data from a SQL Server database table onto a localhost in chrome. That was just the connection, now I'm trying to run operations and edit data into the db table through Node.js in [...] read more
javascript
sql
node.js
sql-server
visual-studio-2019
0votes
0answers

Need to give read-write access to the .log file which is created by other windows user through VC++ application

I have application in VC++. Which is creating test.log file when it launch and modify log file after session end of application. My issue is Lets take two normal windows user test1 and test2 both do not have administrator rights. 1] when i login windfows using test1 user and launch [...] read more
windows
visual-studio-2015
visual-c++-2015
0votes
0answers

How to fix ConstraintLayout inside ScrollView is not scolling?

My App contains many buttons, which are shown under each other, two per row. I generate the buttons dynamically via Java, which are them shown in the ConstraintLayout. <?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:fillViewport="true"> <androidx.constraintlayout.widget.ConstraintLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/rootLayout" > </androidx.constraintlayout.widget.ConstraintLayout> </ScrollView> I have tried several layouts [...] read more
java
android
android-constraintlayout
0votes
1answer

Linux - rtnetlink RTM_GETLINK - handle and understand answered data

I'am trying to understand how rtnetlink works, so I started playing with the idea to build a little library for my self to get into it. I've got to the point where sending/receiving netlink messages works fine. Right now I'am struggling on how to process the answer of an RTM_GETLINK [...] read more
c
linux
networking
netlink
0votes
0answers

ActionResult DownloadFile In debug mode after download file app exit with error (Asp.Net MVC)

I have controller which return file and after download file (in debug mode), iis.exe exit with code -1. This is my controller public class DownloadController : Controller { // GET: Download public ActionResult Index() { return View(); } public ActionResult DownloadFF() { var pathToTheFile = Server.MapPath("~/Content/materials/test.txt"); return File(pathToTheFile, MimeMapping.GetMimeMapping(pathToTheFile), "text.txt"); [...] read more
asp.net
model-view-controller
downloadfile
0votes
0answers

HTML plugin with vertical text flutter

I am trying to show HTML with code with flutter by use flutter_html: ^0.10.4 import 'package:flutter_html/flutter_html.dart'; but scroll when showing html get yellow errorenter image description here [https://i.stack.imgur.com/R8fse.jpg] code body: Builder( builder: (BuildContext context) { return Container( child: Column( children: <Widget>[ _buildHeader(context), loading ? Container( color: Colors.white, child: Column( children: [...] read more
flutter
0votes
1answer

PCI driver failed: Detected PCI bus error on device

I'm trying to do reset on a specific pci device using my own customize driver on ppc64(power pc) machine. This driver works on another ppc64 machine. This is the function that responsible to to do this action. I removed several code lines to emphasize the important flow. int reset_device(void) { [...] read more
linux-kernel
linux-device-driver
powerpc
pci
0votes
0answers

How to make widget out of a GestureDetector with a Container child?

I want to make a reusable button with a container in GestureDetector which will execute some function if I tap it and its color will become dark if I hold it. Any help, hint, tip would be very much appreciated. I tried writing the GestureDetector in the custom widget file [...] read more
flutter
dart
0votes
0answers

mismatching "local" filename while unzipping in python3.6 while the same works fine in python2.7

I am creating a zip file where two of the files are compressed using zlib and other two are uncompressed file. When I try to unzip the same I am getting below error and the content of one of the compressed file is getting overwritten by the content of uncompressed [...] read more
python
python-3.x
python-2.7
0votes
0answers

Random Firebase Background Image and Caching

I have been working on an app that uses a full screen background image that's different everyday. I download this random large image (2048x2732 - about 5MB size) from Firebase Storage and use the cached_network_image dart package to cache the image. I wondering if this is the best approach and [...] read more
flutter
dart
0votes
0answers

Checking single bits in a bitmask using std::pow

I have the following define to check an unsigned int bitmask for a certain bit. Is there a more straightforward way (that doesn't include power of calculation) which I'm not aware of? This is my code: #include <iostream> #include <cmath> #define IS_BIT_SET(x) (foomask & (int)std::pow(2, x-1)) >> x-1 == 1 [...] read more
c++
bitmask
0votes
1answer

web3.eth.abi.encodeFunctionSignature is not working as expected

I am using ERC165 in order to find out whether my contracts support an interface or not but I get really confusing behaviour form functionEncoding method of web3. Here is my interface pragma solidity ^0.5.8; interface ArrayExtraData { function submitOfferArrayExtra(uint offerID, uint[] calldata extra) external returns (int status, uint offID); [...] read more
ethereum
solidity
smartcontracts
web3
web3js
0votes
0answers

Enable TLS and Disable SSL via PowerShell script

I'm looking to automate disabling SSL protocols 2 & 3 as well as disable TLS 1.0 while enabling and enforcing TLS 1.1 & 1.2. I created a PowerShell script based on some blog I read, however, I don't like the way the my script looks. I like building scripts the [...] read more
windows
powershell
ssl
0votes
0answers

Multiple definitions causing error on one computer but not on the other

I'm setting up a new test PC, to test my software running on Windows 10. I've installed Visual Studio 2012 on this PC, along with some third-party software. When I run the software on this PC, I get the following error: C:\Program Files\MATLAB\MATLAB Component Runtime\v77\extern\include\mclmcr.h(217): error C2371: 'int32_t' : redefinition; [...] read more
visual-studio-2012
typedef
0votes
0answers

Md5 Implementation In Python : Problem in the final result

Guys i made the md5 function from scratch I know that there is a library called hashlib but i challenged myself to do it The script works without problem and i got as an output a hex string 32 in length but it's not the md5 the result that i [...] read more
python-3.x
hash
md5
0votes
1answer

Is there a difference if I use excess "const" keywords?

Building flutter apps is all about code efficiency. Of course, when building a reactive application I would use "const" before widgets and classes with constant constructors. However, I would like to know if there is any PERFORMANCE and APP SIZE difference between the following examples: const List<Color> colors = <Color>[ [...] read more
flutter
dart
0votes
2answers

How could I optimise this for loop to run fast on PHP. Runs extremely fast on javascript

So I've been porting some code from Javascript to PHP which works now, however, the execution time is very poor. It takes about 26 seconds in PHP whereas in javascript it is extremely fast. I've been able to break it down to the for loop causing the issue. This is [...] read more
javascript
php
loops
for-loop
0votes
1answer

What's the significance of CONFIG_CGROUPS in Kernel 4.12?

I have an embedded system with power pc architecture 87xx. If I don't enable the "CONFIG_CGROUPS" in Linux kernel I can't mount the devtmpf i.e. ubifs file system.I am trying to understand what't the dependency of CGROUPS in mounting the nand filesystem running UBIFS.If I enable the CGROUPS then I [...] read more
linux-kernel
embedded-linux
0votes
0answers

Fatal error LNK1181: cannot open input file 'C:\Program.obj' when building with NMake with Visual-Studio 2019 using CMake for a Qt5 project

I have a simple Qt5 5.13.0 hello world project, whose Makefile I generate with CMake 3.15.2. Then, I use NMake in the Developer Command Prompt for VS 2019. I successfully generate the Makefiles with cmake -G "NMake Makefiles" .. in a build directory that I created in source. Then when [...] read more
c++
visual-studio
cmake
qt5
nmake
0votes
0answers

Cannot 'launch_vm_process' on 'machine' object in pyvbox

My environment is Ubuntu 16.04, Python3.5.2, pyvbox 2.0.0. I'm trying to work through this introduction (package page on the 'cheese shop' site.) Even before the failed call in the title of this post, I run into a problem with vbox.find_machine ("windows"), my vbox instance doesn't have a find_machine method at [...] read more
python-3.x
virtualbox
0votes
1answer

How to use navigation entry (NavHostFragment) and databinding in activity?

I want to use databinding at the entrance to the navigation. When I use fragment(android:name="NavHostFragment") in the activity, the program can run normally; but when I use fragment in the activity (android:name="NavHostFragment") + databinding, the program will not run. Please help me, I hope to use databinding at the entrance [...] read more
android
0votes
0answers

Buildroot NFS boot failure - can't open /run/nfs/xtab for reading

I am trying to boot a machine into a NFS root built by buildroot, but it crashes at a step near NFS mount. It seems like it wants to read a file, but fails to read it. Boot log: [ 0.000000] Linux version 4.19.57 (user@kernelbuildhost) (gcc version 7.4.0 (Buildroot 2019.02.4)) [...] read more
boot
nfs
buildroot
0votes
1answer

Flutter : How to keep user logged in and make logout

I am getting the csrf token and printing the response data in console but how to keep user logged in using the response data.I am making login using the status code i.e., if status code is 200 then move to login after that I want to keep user logged in [...] read more
authentication
flutter
0votes
0answers

CMake will not be able to correctly generate this project. Call Stack (most recent call first): CMakeLists.txt:20 (project)

I want to install protocol buffers in my Windows system while running below command: cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=../../../../install ../.. I got this error: -- The C compiler identification is MSVC 19.22.27905.0 -- The CXX compiler identification is MSVC 19.22.27905.0 -- Check for working C compiler: C:/Program Files (x86)/Microsoft [...] read more
windows
cmake
0votes
1answer

Triangles seem to reference incorrect vertices when trying to render a mesh in directx11

I have a c++/cx project where I'm rendering procedural meshes using DirectX-11. It worked before, but now, with a new mesh, the triangles appear incorrect, as if they reference the wrong vertex-index. I have spend ages trying to find out what is wrong, but I have absolutely no idea what [...] read more
directx
rendering
shader
c++-cx
vertices
0votes
0answers

why “mov” instruction cost so much time

I profile my code by linux perf, but the results are not so easy to understand. Why does the mov cost so much time in the following code? 55.85 │ mov %rdx,-0x48(%rbp) Could anyone help on that? 15.93 │ mov -0x48(%rbp),%rax 0.00 │ mov %rdx,%rcx │ mov %rdx,-0x50(%rbp) 0.59 │ [...] read more
performance
assembly
x86-64
perf
0votes
0answers

Robust incremental CRC32

I am implementing a flash integrity check for an STM32F10x MCU-based board. This check needs to process the program flash, one block at a time, i.e. 64-byte block per CRC32 invocation, because it needs to be periodic and interruptible. Unfortunately, CRC hardware in STM32F10x doesn't allow configuring the initial checksum [...] read more
c
crc32
0votes
0answers

Windows 2008R2, enabling TLS 1.1 and TLS 1.2 but neither work, any idea's?

This windows 2008R2 production server is patched up to date, but refuses to use TLS 1.1 or 1.2. I have so far.. Enabled the protocols using the registry (CurrentControlSet/Control/SecurityProvers etc) [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\Multi-Protocol Unified Hello\Client] "Enabled"=dword:00000000 "DisabledByDefault"=dword:00000001 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\Multi-Protocol Unified Hello\Server] "Enabled"=dword:00000000 "DisabledByDefault"=dword:00000001 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\PCT 1.0] [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\PCT 1.0\Client] "Enabled"=dword:00000000 "DisabledByDefault"=dword:00000001 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\PCT 1.0\Server] "Enabled"=dword:00000000 "DisabledByDefault"=dword:00000001 [...] read more
windows
tls1.2
windows-server-2008-r2
tls1.1
0votes
3answers

connection error with SQL connection string

I am following a white paper that is a simple VS application that uses .NET to connect to a SQL server 2012 database. https://www.mssqltips.com/sqlservertip/5677/how-to-get-started-with-sql-server-and-net/ My host where my application resides is a windows 7 machine. I have a vmware virtual server that contains the SQL server 2012 enterprise edition installation [...] read more
sql
sql-server
0votes
2answers

Truncate 64Bit Integer to 32Bit and simulate value

I'm trying to write an algorithm to convert a 64Bit integer to 32Bit via truncation, and return a value accurately representing a 32Bit value. The obvious problem is that integers in PHP are only 64Bit (barring 32Bit systems). I first tried the following: $x = $v & 0xFFFFFFFF So if [...] read more
php
type-conversion
integer
bit-manipulation
bitwise-operators
0votes
2answers

Incorrect CRC calculation in protocol. One is implemented using zlib and the other one is calculated in function

I am implementing a protocol in an STM32F412 board. It's almost done, I just need to do a CRC check for the received data. I tried using the internal CRC module for calculating the CRC but I could not match the result to any online CRC algorithm online, so I [...] read more
python
c
stm32
zlib
crc
0votes
1answer

Nginx IP transparency reverse proxying but upstreams need to be able to initiate connections to Internet

I have a docker swarm consisting of an Nginx service that serves as a reverse proxy for a couple of other upstream services, web and mail. Both web and mail service need to connect to an external service via HTTPS in order to perform authentication. The mail service needs to [...] read more
linux
networking
nginx
iptables
docker
0votes
1answer

HAProxy 1.5.4 Performance Tuning

I currently have HAProxy 1.5.4 setup using keepalived for HA on centos 7 using IPtables to create a transparent load balancer to load balance a number of cisco WSA proxy servers for internet filtering on an infrastructure of around 15,000 users running on vmware and cisco UCS with one GB [...] read more
haproxy
0votes
0answers

IPSec tunnel causes huge packets lost when pinging gateway and other machines

My Ubuntu machine is 10.0.0.15, my Windows machine is 10.0.0.10. My gateway, that routes the Internet traffic to the LAN is 10.0.0.1. When I ping the gateway from my Windows machine everything is fine - I get every single packet back. Same holds true, when I ping the Ubuntu machine [...] read more
networking
linux-networking
ipsec
ubuntu-18.04
icmp
0votes
2answers

How to configure IPsec (strongswan) interface, so that only assigned interface gets virtual ip?

I have already used this configuration a bunch of times and I haven't had this problem before. Basically I establish the tunnel connection, but after connecting (with swanctl --initiate --child ch_vti0 --ike ch_vti0) I get my virtual ip assigned on the appropriate interface vti0, but also I have the same [...] read more
networking
ipsec
strongswan
bug
0votes
2answers

Can't connect to a postgres server

I have a strange situation, I have created a second postgres server that will eventually become a slave to my current master, anyway for testing purposes I have currently installed postgres, and testing connections from other hosts. In my postgresql.conf I have a nice an easy:listen_addresses = '*'# what IP [...] read more
postgresql
freebsd
0votes
1answer

ipnat.conf - map and rdr won't work!

I can't put my mind around it, before reboot I was able to ssh in from outside to my jail and right now I can't! I even rebuild the whole system and even that didn't help:( anyone have any ideas? su-3.2# cat /etc/ipnat.rules map fxp0 lama -> 0/32 rdr fxp0 [...] read more
freebsd
nat
0votes
2answers

RDP in 2008 R2 domain no longer working - possible Kerberos issue

Everything was working fine and no changes were made. For no apparent reason, we can no longer RDP to any domain computers except for the domain controllers themselves. This includes Windows 7 clients and non-controller 2008 R2 servers. After entering the password, we immediately get the following error message: "The [...] read more
windows-server-2008
remote-desktop
rdp
kerberos
0votes
0answers

Understanding Routes and Gateway for a TUN VPN in OPENVPN

I am trying to understand the network setup that gets configured in my machine everytime I connect to an OpenVPN (Tun mode). My OpenVPN client creates the following Routes: Destination Gateway Flags Refs Use Netif Expire 10 10.240.0.5 UGSc 1 1 utun1 10.128.16/24 10.240.0.5 UGSc 1 0 utun1 10.240.0.1/32 10.240.0.5 [...] read more
linux
networking
vpn
openvpn
mac-osx
0votes
0answers

Calling Google Translator Service using C3 .net

I am using the below code for calling Google translator but getting an error. using System; using System.Net; using System.Security.Authentication; namespace ConsoleApp3 { class Program { static void Main(string[] args) { Console.WriteLine("Hello World!"); string input="Hello"; string languagePair="En/Fr"; string url = String.Format("http://www.google.com/translate_t?hl=en&ie=UTF8&text={0}&langpair={1}", input, languagePair); WebClient webClient = new WebClient(); webClient.Encoding = [...] read more
asp.net
0votes
1answer

IPVS traffic doesn't seem to go through netfilter on the director node

I have the following setup on a director node running keepalived: * native IP 10.65.5.72 * VIP 10.65.5.230 * keepalived DR mode enabled for port 80 and 443 I was debugging a problem where I couldn't access the IPVS service from the director node itself, and during that process noticed [...] read more
iptables
ipvs
0votes
0answers

Jboss EAP5 fails to start on Linux

I am trying to start JBoss EAP5 server on Linux CentOs machine. However, the process gets killed abruptly and I get nothing in the boot.logs. Please find the logs below: Server Library URL: file:/usr/share/jboss-5.1.0.GA/server/default/lib/ Server Log Dir: /usr/share/jboss-5.1.0.GA/server/default/log Server Native Dir: /usr/share/jboss-5.1.0.GA/server/default/tmp/native Server Temp Dir: /usr/share/jboss-5.1.0.GA/server/default/tmp Server Temp Deploy Dir: [...] read more
linux
jboss
0votes
0answers

Why can't I ping 127.0.0.1 from some network interfaces?

I'm on OS Sierra. This is (part of) what I get on ifconfig ... en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 ether 98:01:a7:b4:91:63 inet6 fe80::4e:52ae:9fa8:2e6c%en0 prefixlen 64 secured scopeid 0x5 inet 192.168.1.33 netmask 0xffffff00 broadcast 192.168.1.255 nd6 options=201<PERFORMNUD,DAD> media: autoselect status: active ... utun1: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1400 inet 10.161.136.55 --> 10.161.136.55 netmask 0xffffffff [...] read more
networking
netstat
ifconfig
0votes
1answer

RabbitMQ SSL connection works from an Ubuntu14.04 machine but not from a CentOS 6 machine

I have setup a rabbitmq ssl connection on my remote server as per the docs here: https://www.rabbitmq.com/ssl.html I am using java rabbitmqclient to connect to the remote server and sending a hello message to a queue on rabbitmq-server, the connection works fine from my local ubuntu 14.04 machine but does [...] read more
centos
ssl
java
openssl
rabbitmq
0votes
2answers

Run OpenVPN server on alias IP

I want to configure OpenVPN server that works on alias IP. I changed the client config to have alias IP as remote and added "local 188.xx.xx.55" in OpenVPN config which is our alias IP. Also set "netd_interface=188.xx.xx.55" which is again alias ip. When the VPN connects and I check my [...] read more
openvpn
ip-aliasing
0votes
1answer

"ip rule to" works but "ip rule fwmark" fails - why?

I have a CentOS 6 (kernel 2.6.32) router with working OpenVPN client on it, and I want to redirect some traffic via VPN server. Client (192.168.60.159) sends request to router (192.168.60.6:1443), and router redirects it via VPN connection (10.200.0.54) to server (185.61.149.21:443). I've created a specific routing table tunde and [...] read more
iptables
iproute2
0votes
1answer

RDS 2012 R2 some users are not able to logon after changed date and time on Connection Brokers

Due to a malconfigured NTP server of ntp.org, the date and time on all our servers and client was set to the date of tomorrow (1/1/2017 instead of 31/12/2016). We've manually changed the date back to the date of today on our Primary Domain Controller (PDC) and executed w32mt /resync [...] read more
windows-server-2012-r2
remote-desktop-services
0votes
1answer

How do I load balance outgoing connections with iptables and iproute2?

I have a server behind two public facing gateways INTERNET | | GW1 GW2 | | SERVER GW1's IP is 192.168.w.x, MAC aa:bb:cc:dd:ee:ff GW2's IP is 192.168.y.z, MAC ff:ee:dd:cc:bb:aa # note: w != y and I'm trying to load balance outgoing connections from the server. I've built upon pepoluan's solution [...] read more
iptables
load-balancing
iproute2
0votes
1answer

Two Azure VM clones have different processor

I have two Ubuntu 16.04 Azure VMs created from the same image, in the same region (WestEurope), configured to be the same size (Standard A1, 1 vcpus, 1.75 GB memory) and created at the same time (days of difference). Inspecting the CPU info they are completly different, one being a [...] read more
azure
0votes
1answer

Opcache not working properly

I got problem with Opcache. It's not working as I wish/desire.. This is my opcache configuration cat /etc/php/7.1/apache2/php.ini | grep opcache [opcache] opcache.enable = 1 opcache.enable_cli = 1 opcache.memory_consumption = 256 opcache.interned_strings_buffer = 16 opcache.max_accelerated_files = 8882 ;opcache.max_wasted_percentage=5 ;opcache.use_cwd=1 opcache.validate_timestamps = 0 opcache.revalidate_freq = 0 ;opcache.revalidate_path=0 ;opcache.save_comments=1 opcache.fast_shutdown = 1 [...] read more
apache-2.4
php7
opcache
0votes
1answer

Route ftp packets to one network interface, the rest to the other

I have an ubuntu 14.04 server with two NICs, each one connected to seldom routers, each with separated internet access. We want to redirect ftp ports traffic through the second interface, em1, and all the rest through the default interface p4p1. I have both interfaces up. I've followed the instructions [...] read more
iptables
routing
linux-networking
0votes
1answer

Windows Server 2012 R2 - Help finding failed logon attempts source

I'm seeking help for this issue that I'm having in our AD domain controller where a lot of security events are being logged due to failed logon attempts by a (former) domain user that has been disabled and subsequently deleted. I'm trying to pin-point the origin of these attempts but [...] read more
active-directory
windows-server-2012-r2
domain-controller
windows-authentication
eventviewer
0votes
2answers

Inconsistencies with Linux tc filter u32 matching on packet data payload - can someone explain?

I would just like some heads up on this as I really don't understand -why- this is the case. Further down is the TCPDUMP output (tcpdump -s0 -XXnni eth0 tcp port 80) of the 'HTTP' response a webserver gives when a normal GET request is made to it. What I [...] read more
linux
networking
filter
pcap
tc
0votes
0answers

Ubuntu Server 16.04 64bit had only 8Gb of RAM when 16GB are installed

I have one DIMM installed on a Lenovo x3550 M5 server. The OS is Ubuntu 16.04.2 64 bit uname -ra Linux hostname 4.4.0-62-generic #83-Ubuntu SMP Wed Jan 18 14:10:15 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux free -hm gives: total used free shared buff/cache available Mem: 7.2G 238M 6.5G 20M 474M [...] read more
ubuntu
memory
0votes
1answer

Kerberos authentication ticket - Event ID 4768 - Audit failure

I am using kerberos to authenticate a user and its failing. Audit failure details in event viewer are following A Kerberos authentication ticket (TGT) was requested. Account Information: Account Name: HTTP Supplied Realm Name: TEST.COM User ID: NULL SID Service Information: Service Name: krbtgt/TEST.COM Service ID: NULL SID Network Information: [...] read more
windows-server-2008
active-directory
kerberos
0votes
2answers

4 TB external disk on Centos 5

I have an old server running CentOS 5(Kernel 2.6.18-92.el5). It is running a legacy application so I can't retire it yet. I had connected a 2 TB USB disk to it to take backups and the disk is almost full right now. I bought a new 4 TB disk but [...] read more
partition
centos5
fdisk
parted
0votes
1answer

OpenVPN block SMTP Access Server completely

I've tried almost all iptables rules to block smtp on openvpn server but still clients clients can access remote smtp servers on port 25. I'm using openvpn access server. It's creating two interfaces as0t0 and as0t1. All users assigned ips from 172.16.0.0/12. Please help me what rules can be written [...] read more
iptables
smtp
openvpn
0votes
1answer

Network configuration fault

I'm moving my router from Rpi with Rasbian to another pc device with ubuntu server 14. I have: - local network 10.0.0.0/16, with my router gateway 10.0.0.1 - lte usb device 192.168.8.1 in network 192.168.8.0/24 - lte usb device 192.168.10.1 in network 192.168.10.0/24 I have moved all network settings with [...] read more
linux
ubuntu
iptables
routing
0votes
1answer

Captive portal with iptables and local dns server

I'm trying to redirect all the browser's requests from my wifi interface wlan1 to a captive portal. I have a node web server running on my target on 10.4.30.34:4040. It has to redirect the browser directly to the web server, on the good port, like I entered "10.4.30.34:4040" in the [...] read more
iptables
dnsmasq
captive-portal
0votes
1answer

CentOS Development Server Crashing Frequently

I am running a development server on a fairly old version of CentOS 5. This server has been live almost constantly for the past five years ago, so has been pretty stable. A while ago, it crashed during normal operation. I restarted it and it crashed again after a few [...] read more
centos
centos5
server-crashes
0votes
1answer

unable to find driver - lamp debian

This is my php sample script: <?php try{ $db=new PDO('mysql:dbname=_mydb;host=localhost', 'root', 'xxxxxx'); }catch(PDOException $e) { echo "Error: ".$e->getMessage(); } ?> And I have returned: could not find driver Also: user@nbook:~$ php -i|grep PDO PDO PDO support => enabled PDO drivers => mysql PDO Driver for MySQL => enabled This is [...] read more
mysql
php
pdo
0votes
1answer

"No inittab file found" after reset

An old dedicated server (Debian with Raid1) wasn't responding today and now can't boot after manual reset. Last message is > No inittab file found. I still have access to filesystem via rescue system. Ran fsck and checked raid (both arrays are clean). Booting 'Debian GNU/Linux, kernel 2.6.26-2-amd64 Default' root [...] read more
debian
raid
boot
inittab
0votes
1answer

PBR with iptables

I know question was answered multiple times, but this situation a bit different. So here is what I have: * All users must user default gateway on eth0, except one * That one must only use gateway on eth1 and must not under any circumstances use eth0 Separately this things [...] read more
debian
iptables
routing
policy-routing
0votes
1answer

LAMP server kerberos config to authenticate against a read only Windows KDC in a dmz

Background: We have a number of AD networks (domains) that are connected through VPNs and have established AD trust relationships. We have an externally hosted web server and have configured seamless authentication for any user within the trusted network. This works but the presence of the VPN to an external [...] read more
apache-2.2
active-directory
kerberos
dmz
domain
0votes
1answer

iptables rules for lvs using piranha gui

I am trying to bulid an lvs system, where 202.141.81.239 is the virtual IP and 202.141.81.241 and 202.141.81.242 are the lvs routers.Ths system is working fine in our intranet but is not through internet. The following is my iptables configuration # Generated by iptables-save v1.4.7 on Tue Mar 25 12:30:26 [...] read more
redhat
lvs
piranha
0votes
0answers

iptables 1.4.12 invert and --u32

This line in a script: iptables -A jk2_ddos -m u32 ! --u32 "0x1c=0xffffffff" -j ACCEPT will result in this error: iptables v1.4.12: u32: option "--u32" cannot be inverted. This seems not to work in iptables 1.4.12. In older versions it worked. I need something that does the same. The problem [...] read more
linux
iptables
0votes
1answer

debugging smtp | ubuntu 12.04, postfix, dovecot

I cannot sucessfully connect to my smtp server from my mail client. I am getting the following errors in my /var/log/mail.log file Dec 21 15:08:04 pareto postfix/smtpd[11101]: SSL_accept:SSLv3 flush data Dec 21 15:08:04 pareto postfix/smtpd[11101]: read from B96D2180 [B96C1EB3] (5 bytes => -1 (0xFFFFFFFF)) Dec 21 15:08:04 pareto postfix/smtpd[11101]: read [...] read more
email
postfix
smtp
vps
dovecot
0votes
1answer

traffic shaping, prioritizing packets without using a bitrate ceil/max

I've written a script that shapes traffic into 3 pipes. The first pipe needs to be high priority and always be send first. This works perfectly now on 1 condition. I enter a correct ceil/max bitrate. This script is written to work an a device that will work with lots [...] read more
linux
networking
traffic-shaping
0votes
1answer

BAT file will not run from Task Scheduler but will from Command Line

I'm trying to run a BAT script from Task Scheduler in Windows 2008 R2 and it runs for 3 seconds and then stops. It says it successfully completes but I know it doesn't. I can run this script from the command line directly, and it runs just fine. The bat [...] read more
windows-server-2008-r2
task-scheduler
0votes
2answers

Add route on OpenBSD for DSL modem on external network

I'd like to be able to access my DSL modem, which is acting as a bridge, from within my local network. I've got a setup like this: {Local network 192.168.1/24} | rl0:192.168.1.250 [OpenBSD Router] rl1:up tun0:pppoe | [Bridge DSL modem IP:192.168.1.254] | {Internet} I'd like to access the Bridge. To [...] read more
networking
router
routing
openbsd
0votes
0answers

Linux booting stop at Starting kernel when using Yocto build image with SD card

I'm tring to porting linux on imx6 PDK B/D(imx6-qaudplus-sabreauto) with Yocto build image. my customize sdcard image (mixed imx6/8)= * u-boot.bin(iMX6 Yocto bitbake result) * zImage(iMX6 Yocto bitbake result) * .dtb file(iMX6 Yocto bitbake result) * rootfs(iMX8 Yocto bitbake result) but stop at Starting kernel... and no more console printed. [...] read more
linux
boot
0votes
0answers

WriteFile on Com port indicates Tx complete, but no data transmitted

I am using VS 2013 Professional in an MFC project I have been using my software to receive data from the com port for some time, but recently needed to add transmission capability The Init code is: BOOL PASCAL FAR SetupConnect(pCONNECTION pCon, pCOMCONFIG pCfg) { DCB dcb; pSERBUF pSB = [...] read more
windows
windows-10
visual-studio-2013
0votes
0answers

I got a SIGILL and JVM crashed when I booted a java application with --agentpath:libxxx.so on AIX 7.1

My dynamic shared library complied with CPPFlAGS: -q64 -G. The compiler version is IBM XL C/C++ for AIX, V11.1 (5724-X13) Version: 11.01.0000.0024 when it was started, then crashed, here is part of information in hs_err*.log. It seems that this error occurred by dlopen # # A fatal error has been [...] read more
crash
aix
jvm
0votes
0answers

Linux-Yocto, ARM: VFS: Cannot open root device "ubi0:root" or unknown-block(0,0):

I'm booting from NAND zImage and rootfs (UBIFS) to the ARM board (yocto-project building). global.bootm.image="/dev/nand0.root.ubi.kernel" global.bootm.oftree="/dev/nand0.root.ubi.oftree" global.linux.bootargs.dyn.root="root=ubi0:root ubi.mtd=root rootfstype=ubifs" The process is just erase, format UBI volume and write UBIFS. ubiformat /dev/nand0.root ubiattach /dev/nand0.root ubimkvol -t static /dev/nand0.root.ubi kernel 8M ubimkvol -t static /dev/nand0.root.ubi oftree 1M ubimkvol -t dynamic /dev/nand0.root.ubi [...] read more
linux
partitioning
root
yocto-project
0votes
2answers

php and zendguard with asterisk / freepbx

Im running freepbx version 13 and started to upgrade to version 14. System is on a CentOS 6 system. The system required certain upgrades first including php which I've upgraded to 5.6.40 and installed zenguardloader 2.6.0 I'm assuming there is some sort of incompatibility between php and zenguardloader as I [...] read more
php5
freepbx
0votes
0answers

debugging boltd and Dell TB16 on Dell Latitude 5491 and Xubuntu 18.04

Every now and then my Dell TB16 dock device stops working i.e. port replication is off, also the dock's white LED goes off. * OS: Xubuntu 18.04.2 LTS * Kernel: 4.15.0-54-generic #58 * System: Dell Latitude 5491 BIOS 1.8.1 05/23/2019 I've installed the thunderbolt daemon boltd but the boltctl command [...] read more
dell-latitude
xubuntu
docking-station
thunderbolt
0votes
2answers

Virtual machine has terminated unexpectedly during startup with exit code -1073741819 (0xc0000005)

I have installed VB on a new machine running Windows 10 Pro 1803 (build 17134.556) and running any machine instance always fails with this error: The virtual machine 'linux' has terminated unexpectedly during startup with exit code -1073741819 (0xc0000005). More details may be available in 'C:\Users\osama.shabrez\VirtualBox VMs\linux\Logs\VBoxHardening.log'. Result Code: E_FAIL [...] read more
virtualbox
0votes
0answers

Cannot down-clock AMD GPU on Manjaro

So, I have an RX590 FatBoy, which albeit very nice comes factory overclocked which is bad, since it's cooling isn't up to par. On Windows, I lowered the voltages via the Catalyst app and voila - all overheating problems were gone while retaining all the performance I needed. On Manjaro [...] read more
linux
overclocking
manjaro
amd-graphics-card
0votes
2answers

External SSD Drive won't mount on OSX

A colleague at work has a Kingston 240GB SSD drive which has come out of a now dead computer. We want to be able to recover some data from it (no backups sadly) however the drive won't mount properly. I am using an Anker USB3 external HDD enclosure which I [...] read more
macos
hard-drive
ssd
external-hard-drive
data-recovery
0votes
1answer

UBI layout volume not found

I am following Bootlin's embedded Linux training which aims to put an embedded Linux system on an Atmel SAMA5D4 Xplained board (theory slides, practical lab instructions) and I am stuck a putting the whole system on the NAND flash. They ask me to put the DTB, the kernel, the root [...] read more
linux
embedded-linux
0votes
0answers

Traffic going to both eth0 and tun1

I'm working on Transmission over OpenVPN with split tunneling but I'm facing an issue with the firewall rules. So I decided to disable the firewall and check if it's working. It is but in a strange way. IPTables is set up to allow Transmission over tun1 only. The whole rules [...] read more
linux
networking
vpn
iptables
transmission
0votes
0answers

Kernel migration from 3.10 to 4.19 causes JFFS2/MTD/CFI mounting issues

I am trying to upgrade the kernel from 3.10 to 4.19 on an Atmel at91sam9260 system, everything otherwise unchanged. The system has 8 partitions on a NOR flash that work fine on 3.10. Booting into an initramfs on 4.19 followed by mounting the unchanged JFFS2 partitions reveals a lot of [...] read more
linux
boot
filesystems
embedded-linux
0votes
0answers

PCI Read Error on QNX for PowerPC

My team is developping on an MPC8313 PowerPC Dev Board and we're trying to write a network driver. The network card is a PCIe card connected to a PCIe-to-PCI bridge (PI7C9X111SL). The pci utility detects the card and can read and write the PCI config space. The problem is when [...] read more
drivers
pci-express
pci
powerpc
ppc
0votes
0answers

Replacing an ssd on notebook (asus N501VW)

I'm finally running out of space on a 128GB ssd on a notebook (N501VW) and am thinking of replacing it with a larger, 500GB, drive. The setup: * 1 notebook (N501VW) running Win 10 (x64) * 3 drives (128GB ssd (M2) (C:), 1TB hdd (D:), 500GB ssd (M2)) 128GB: C:\WINDOWS\system32>fsutil [...] read more
partitioning
ssd
backup
filesystems
file-management
0votes
0answers

Debugging MTP transmission/driver on windows

Basically I'm developing USB device, which will be using MTP for file transmission. It works fine with Konqueror, and Dolphin I can successfully copy files around, also mtp-getfile works (on Linux). On windows I can see my device and list files, but when I try to copy any of them, [...] read more
windows
usb
drivers
debug
mtp
0votes
0answers

Wine x64 w/ 32-bit prefix "page fault on read access to 0xffffffff in 16-bit code"

I'm trying to setup an old education program my wife wants to try with our kids. Unfortunately, it was built in the Windows 3.1 / Windows 95 era. I'm running Fedora 29 x86_64 with Wine 4.0-0.3.rc2. I've setup a 32-bit prefix per https://wiki.winehq.org/FAQ#How_do_I_create_a_32_bit_wineprefix_on_a_64_bit_system.3F . When I run the setup.exe on [...] read more
linux
wine
16-bit
windows-95
windows-3.1
0votes
1answer

Why isn't my forced MAC address change working (Raspberry Pi)?

I'm working with Raspberry Pi Zeros on a subnet. I bought external Ethernet adapters for each one to connect them to one another. Unfortunately, these ethernet adapters all came with the exact same MAC addresses, making communication between the Pis near impossible. Because of that I've tried forcing a change [...] read more
linux
networking
raspberry-pi
subnet
0votes
0answers

System hang and black screen BugCheckCode 278 and BugCheckCode 0

For past two days the system would hang up or enter black screen and won't restart right away (after pressing restart button) but at one instant it generated Blue Screen (BugCheck Code 278). This issue has been occurring only during gaming(for one game during loading screen for other mid game [...] read more
windows-7
freeze
bsod
crash
0votes
1answer

Dell desktop falls asleep in a couple minutes, ignores power/screen saver settings

My parents' Dell Inspiron tower goes to sleep within ~3 minutes of inactivity, despite every power setting in Windows (screen saver, turn off screen, go to sleep, turn off hard-disk, etc.) either turned off or set to 60 minutes. This answer claims that Dell has been known to bundle their [...] read more
windows-10
sleep
power-management
dell-inspiron
0votes
0answers

Windows 10 Explorer crashes when opening "new" context menu, need help deciphering dump file

As the title says, whenever I attempt to open the "new" sub-menu of the right click context menu in Windows 10 explorer locks up and then crashes a few moments later. This issue only appeared in the last couple days and I suspect it is a result of the Creator's [...] read more
windows
windows-explorer
windows-update
context-menu
0votes
1answer

Two openvpn connections: one with redirect-gateway and a second one for private network

I have a personal VPN that I use as a default gateway for all Internet traffic when I'm on the road. This works great and I have no problem. I also have a work VPN, which I need to connect to reach machines on their private network. What I want [...] read more
networking
routing
openvpn
0votes
0answers

different speed ssd partitions

I have Samsung NVMe SSD 960EVO 250GB disk and it gives me some weird result when testing read speed using hdparm -tT. Speeds before trim /dev/nvme0n1: Timing cached reads: 24486 MB in 2.00 seconds = 12256.70 MB/sec Timing buffered disk reads: 5502 MB in 3.00 seconds = 1832.95 MB/sec jkalmar@supercomp:~> [...] read more
linux
ssd
performance
opensuse
0votes
0answers

Kworker thread has high CPU usage

I have a kworker thread with high cpu usage, which is causing my touchscreen to be very lag-y and unresponsive. Running a beaglebone with Debian. uname -r 4.1.15-ti-rt-r43 pid user pr ni virt res shr s %cpu %mem time+ command 90 root 20 0 0 0 0 R 34.7 0.0 [...] read more
linux
cpu
kernel
linux-kernel
threads
0votes
1answer

HP Proliant getting down with Critical error LED Blinking - what then?

After a few hours of correctling working, our proliant Server stop calculus with the System Healt LED 12 blinking, which according to the documentation ( http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c01706108-8.pdf ) is the sign of a "Critical system failure detected (processor, memory, regulator, thermal event, fan, NMI)" (page 96). SSH is then lost. We [...] read more
linux
ubuntu
memory
0votes
0answers

PPTP error 619 when accessed externally

I set up a PPTPD server on Arch Linux. If I connect to the VPN using the server's local IP (192.168.1.107), it works, but if I connect to the VPN using the external IP address, then the client results in error 619. Any help would be greatly appreciated! Output of [...] read more
linux
networking
vpn
arch-linux
pptp
0votes
2answers

Postfix SMTP SSL config: Can't send email but can receive it with SSL

I am trying to finish configuring my postfix/dovecot mail server that sits behind my home's router/firewall. I'm on Mint/Ubuntu 12.04. I'm close. I can connect/retrieve emails via SSL but can only send email from a client when not using SSL, just username/password. If I attempt an SSL connection with the [...] read more
email
ubuntu-12.04
ssl
postfix
dovecot
0votes
1answer

Recieved BSOD after restart

When i start my laptop i get this error "DPC_WATCHDOG_VIOLATION" i really donyt know what is the issue... can some one help.... -------------------------------------------------------------------------------- DUMP FILE Microsoft (R) Windows Debugger Version 6.3.9600.17336 AMD64 Copyright (c) Microsoft Corporation. All rights reserved. Loading Dump File [I:\121115-55411-01.dmp] Mini Kernel Dump File: Only registers and [...] read more
windows-8
bsod
0votes
2answers

Windows 8.1 dual-boot with openSUSE boot failure

I already have Windows 8.1 on my newly built PC and wanted to dual-boot with openSUSE. I wrote the install image to a USB, but the install kept hanging so I used network install (also written to a bootable USB). Before install I created a separate 100 GB partition on [...] read more
linux
boot
windows-8.1
partitioning
opensuse
0votes
0answers

Suspend does not work on Debian Jessie

Today I observed that suspend sometimes does not work properly in freshly installed Debian Jessie. After executing suspend (Alt + Shut Down button) the following message appears on black screen: Loading, please wait... The syslog is as follows. I kindly as for any suggestions. Jul 12 18:53:10 svarog kernel: [ [...] read more
linux
debian
suspend
0votes
0answers

pm-hibernate does not turn off system

I'm trying to make pm-hibernate to work on my Ubuntu 14.04 system. When I invoke sudo pm-hibernate display turns off and I can't do anything anymore but computer does not turn off. All I have found in logs is: Mar 17 21:40:25 dmitry-pc kernel: [ 0.000000] PM: Registered nosave memory: [...] read more
linux
ubuntu
hibernate
ubuntu-14.04
0votes
1answer

Mono is crashing on MAC OS X with Keepass 2.23

Mono is crashing on MAC OS X (10.8.4) with Keepass 2.23 while accessing password database. Using keepasshttp with firefox. Any workaround for this ? =========================================================== Process: mono-sgen [7586] Path: /usr/bin/mono Identifier: mono-sgen Version: ??? Code Type: X86 (Native) Parent Process: bash [7194] User ID: 501 Date/Time: 2013-08-15 13:34:28.515 +0530 OS [...] read more
macos
keepass
mono-framework
0votes
2answers

Why can't I connect to an AFP server over VPN on OS X 10.8

I have set up a VPN connection on my MacBook Pro OS X 10.8.5 laptop, to my office network so I can access my AFP file server from home. The VPN connection appears to be working correctly. The Status reads Connected and I am getting both a connect time and [...] read more
macos
networking
mac
vpn
afp
0votes
1answer

Bluetooth / Bluez: No reply to ping over bnepX interface

I have trialed to use Network, NAP profiles on Bluetooth. On Host, xUbuntu 13.04 I have followed as here. This Host or XUbuntu machine is behind proxy & runs on virtual machine. It is installed with Bluetooth version 4.101 On embedded board, ping 173.194.112.211 responds as below: PING 173.194.112.211 (173.194.112.211) [...] read more
linux
networking
wireless-networking
bluetooth
0votes
0answers

command to write to physicaldrive?

I have a bat file that we use to write meaningless data to a harddisk. But I dont know what exactly it means... Here is the command: dtlite2 of=\\.\physicaldrive1 bs=256k limit=200m passes=1000 disable=cache pat_part1=0xffffffff pat_part2=0xffffffff pat_part3=0x0 pat_part4=0x0 dlimit=2048 platform is windows. This is run from a bat file. read more
windows
hard-drive
writing
0votes
1answer

Video from vhs via USB capture device on Linux

I want to transfer video from a VHS tape to my computer with Arch Linux, using a USB capture device that comes with Roxio Easy VHS to DVD, which I recently bought. I tried to plug in the device, and it was properly recognized. From /var/log/messages.log, em28xx #0: Identified as [...] read more
linux
video
video-capture
0votes
1answer

Laptop computer grahpic opens and loads slowly

So i have this laptop whenever i open a folder, close a folder, or do anything graphical it runs slowly. and when i say slow i mean you can actually SEE in slowmo the animation running. Say for instance you want to open a folder. you can see the full [...] read more
windows-7
graphics-card
graphics
0votes
2answers

Wine crashes when trying to run portable version of Firefox

I think there is something wrong with my Wine setup, but I don't know how to fix it or even what it is. Others have gotten this program to work without problems in Wine. This is the console output that I get from Wine before it crashes. > fixme:system:SetProcessDPIAware stub! [...] read more
linux
ubuntu
firefox
ubuntu-10.04
wine
0votes
1answer

OSX Panic about once a week

I am running OSX 10.6.6 and I this is the second kernel panic in 2 weeks. Here is the log that gets sent to Apple. Help! Model Name: MacBook Pro Model Identifier: MacBookPro6,2 Processor Name: Intel Core i7 Processor Speed: 2.66 GHz Number Of Processors: 1 Total Number Of Cores: [...] read more
macos
kernel-panic
0votes
1answer

xorg.conf: Why does this have no effect?

Here is my xorg.conf file. The problem is that my resolution setting 1600x900 is getting ignored. The resolution keeps popping to 1280x1024 Edit The resolution comes up as 640x480 after unplugging the physical monitor. When my file gets ignored, the system seems to read my monitor to find it's capabilities [...] read more
resolution
xorg.conf
solaris-10
-1votes
1answer

embedded linux buidling/booting issue

I am trying to cross compile the Linux for a dual-core ARM Cortex A9 device. While booting I got the following prints on the UART which is showing some sync issue when Core-1 is starting. I remember I have enabled multi programming while compiling the kernel. What part of the [...] read more
linux-kernel
embedded-linux
buildroot
busybox
intel-fpga
-1votes
1answer

How to implement fragment transaction in Flutter?

I'm having a Tab Layout at top of the screen and Bottom Navigation view at bottom of the screen. I need to have a container in the middle and swap the views which is similar to fragment transactions in Android. How to acheive this in Flutter ? home: DefaultTabController( length: [...] read more
flutter
-1votes
0answers

Reversing CRC64

I'm looking for a way to reverse a CRC64 checksum. I already have CRC32 reversing implementation, and it actually reverses the checksum to it's original value, if it's 32 Bits in length. I have simply nothing to create a CRC64 reverse implementation. I tried multiple times but failed to do [...] read more
c#
reverse-engineering
implementation
crc64
-1votes
1answer

How to fix ''System.ArgumentException" in c#?

I'm working on a small project that involves compiling code. I keep getting this error: An unhandled exception of type 'System.ArgumentException' occurred in mscorlib.dll Illegal characters in path. I've tried finding the source of the problem, this line of code seems to be the problem: CompilerResults cr = provider.CompileAssemblyFromFile(parameters, source1); [...] read more
c#
codedom
-1votes
1answer

RCC_AHB2PeriphClockCmd

I'm beginner in Embedded programming. I'm programming in STM 32F407ZG. While programming the demo codes, i just came across the code RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOF, ENABLE); what is this?, explain it. #include "stm32f4xx.h" #include "stm32f4xx_rcc.h" void delay() { for(int i=0;i<0x3FF;i++) for(int j=0;j<0x3FF;j++); } void mx_pinout_config(void) { GPIOG->ODR = 0x00000000; RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOF, ENABLE); GPIOF->MODER = [...] read more
embedded
microcontroller
-1votes
0answers

Connection refused error while running in Microsoft Visual Studio

I installed Microsoft Visual Studio 2015 professional. While running my project, it's creating .vs file, it's giving the error "CONNECTION REFUSED" in the browser. But sometimes after deleted .vs file, it will load the first page of the project properly. if I select any other pages giving the same error. [...] read more
visual-studio
-1votes
2answers

How to make an arbitrary Microsoft FILETIME?

I would like to make an arbitrary Microsoft FILETIME. The algorithm is more important than the Microsoft programming language. For example if today is June 2 2016, I would like to calculate the FILETIME at midnight June 2016. Any help is greatly appreciated. [EDIT June 2 2016 5:09 P.M Here [...] read more
windows-7
date-time
algorithm
-2votes
1answer

How to access a List in another class? [Flutter]

I have a FAB which creates a new Card when using onPressed. The List is created using this code :List<Widget> cardList = new List.generate(_count, (int i) => new createCard());. Is it possible to access this list in another class? main.dart: import 'package:flutter/material.dart'; import 'package:todo_list/starting_screen.dart'; void main(){ runApp(MaterialApp( debugShowCheckedModeBanner: false, theme: [...] read more
flutter
-2votes
3answers

Java InetAddress.getLocalHost().getHostAddress() returns invalid IP

And when I say invalid, I mean invalid. I get an IP address that's not associated with any of my machine's interfaces. I'm aware there are similar questions on the site, but they're more about people getting the address of an interface they didn't want (e.g., 127.0.0.1 instead of LAN [...] read more
java
networking
ip
-2votes
1answer

Console bugging and bugged, evidently

It appears that a false file path has been installed on a home computer many of us use, that reroutes my emails from gmail, to an Entourage mail app that I do not use, and from my dock have no access to…. My question is, is this even possible, and [...] read more
macos
-3votes
0answers

String.fromCodeChar and codePointAt() js equivalent in php and js XOR vs PHP XOR

I want to convert the bellow js function in php. with large int key. function encodePassword(s, key) { var enc = ""; var str = ""; // make sure that `enter code here`input is string str = s.toString(); for (var i = 0; i < s.length; i++) { // create [...] read more
javascript
php
-4votes
1answer

is there any web crawler can get access to users region for download?

Actually I am using Httrack as a web crawler, can it use my credentials to access members area and download the zip files because they are restricted from public access. Thank you in advance. Update: After all the problem was with my IPV6 it must be disabled; with (Windows 8 [...] read more
web-crawler
-5votes
2answers

Is there a way computer can have same representation for two different numbers?

I have this number -16777216 in Int32 and its hex representation is FF000000. On right shifting this number right by 24 I get 0xFFFFFFFF and on masking by 0xFF000000 and then shifting right by 24 I get 0x000000FF. Int32 a = -16777216;//FF000000 in hex Int32 b = a >> 24; [...] read more
c#
bit
negative-number

Comments

Leave a comment

(plain text only)

Sources

  1. https://msdn.microsoft.com/en-us/library/cc231198.aspx

User contributions licensed under CC BY-SA 3.0