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

689votes
38answers

Generate an integer that is not among four billion given ones

I have been given this interview question: > Given an input file with four billion integers, provide an algorithm to generate an integer which is not contained in the file. Assume you have 1 GB memory. Follow up with what you would do if you have only 10 MB of [...] read more
algorithm
file
search
out-of-memory
memory-limit
20votes
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
17votes
6answers

Integer cube root

I'm looking for fast code for 64-bit (unsigned) cube roots. (I'm using C and compiling with gcc, but I imagine most of the work required will be language- and compiler-agnostic.) I will denote by ulong a 64-bit unisgned integer. Given an input n I require the (integral) return value r [...] read more
c
optimization
math
gcc
numerical-analysis
13votes
4answers

Ethernet CRC32 calculation - software vs algorithmic result

I'm trying to calculate the Frame Check Sequence (FCS) of an Ethernet packet byte by byte. The polynomial is 0x104C11DB7. I did follow the XOR-SHIFT algorithm seen here http://en.wikipedia.org/wiki/Cyclic_redundancy_check or here http://www.woodmann.com/fravia/crctut1.htm Assume the information that is supposed have a CRC is only one byte. Let's say it is 0x03. [...] read more
python
algorithm
ethernet
crc32
13votes
2answers

Troubleshooting "TypeError: ord() expected string of length 1, but int found"

ERROR : TypeError: ord() expected string of length 1, but int found I am getting this error while compiling the program. File "C:\Users\Administrator\Desktop\tracer1.py", line 129, in <module> get_route("www.google.com") File "C:\Users\Administrator\Desktop\tracer1.py", line 85, in get_route d = build_packet() File "C:\Users\Administrator\Desktop\tracer1.py", line 62, in build_packet myChecksum = checksum(header + data) File "C:\Users\Administrator\Desktop\tracer1.py", [...] read more
python
ping
icmp
13votes
3answers

Nodejs: convert string to buffer

I'm trying to write a string to a socket (socket is called "response"). Here is the code I have sofar (I'm trying to implement a byte caching proxy...): var http = require('http'); var sys=require('sys'); var localHash={}; http.createServer(function(request, response) { var proxy = http.createClient(80, request.headers['host']) var proxy_request = proxy.request(request.method, request.url, request.headers); [...] read more
javascript
string
encoding
node.js
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
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
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
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
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
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
6votes
1answer

What is clang trying to do optimizing this simple recursive algorithm?

Upon writing an answer to this question: Using variable vs. using number I ran clang x86 9.0.0/trunk with -O3 to see if it could do tail-call optimization of this simple code: int faculty1 (const unsigned int n) { return n == 1 ? n : n * faculty1(n - 1); [...] read more
c
assembly
x86
clang
6votes
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
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

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
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
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

`LoadLibraryExW` triggers exception `0xC0000023` from `NtMapViewOfSection`

It's going to be really hard to reduce the scope of this question, but here we go. CONTEXT I'm in the context of a 32-bit ActiveX control which is loaded into a host ( TstCon.exe). After unloading and reloading the control, I receive a streak of errors from NtMapViewOfSection, the [...] read more
c++
winapi
visual-c++
activex
seh
4votes
3answers

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
4votes
1answer

Bitwise operations in JavaScript

I know that numbers in JavaScript are stored in IEEE-754 format. But when we use integers, particularly bitwise operators, they're represented as two's complement with 32 bits. So -1 would be 0xFFFFFFFF. But (-1).toString(2) is -1. And -1 >>> 31 is 1, that's right, but -1 >>> 32 must be [...] read more
javascript
bitwise-operators
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
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
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
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 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
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
3votes
1answer

How to understand why an ARM exception happens?

I'm trying understand what is the reason of ARM exception that I encounter. It happens randomly during system startup, and may looks in few different ways. One of simplest is following: 0x8004e810 in ti_sysbios_family_arm_a8_intcps_Hwi_vectors () #0 0x8004e810 in ti_sysbios_family_arm_a8_intcps_Hwi_vectors () #1 0x80002f04 in ti_sysbios_family_arm_exc_Exception_excHandlerDataAsm(int0_t) () at /home/rnd_share/sysbios/bios_6_51_00_15/packages/ti/sysbios/family/arm/exc/Exception_asm_gnu.asm:103 Backtrace stopped: previous [...] read more
c
arm
gdb
cortex-a
segger-jlink
3votes
2answers

Task Scheduler returns 0xFFFFFFFF in Windows 7

I created a Python script that collects data from a website and generates an Excel file based on a table in that website. I used pyinstaller with -w -F parameters to generate a .exe file. I ran this file a few times and it worked perfect so I decided to [...] read more
python
windows
task
pyinstaller
scheduler
3votes
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
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
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
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
xeon
clockspeed
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
0answers

Failed MacbookAir boot Linux (Tails) - Kernel panic on boot

I’ve an error with my MacBook Air (Retina, 13-inch, 2018), version 10.15.1 Boot ROM version : 1037.40.124.0.0 (iBridge: 17.16.11081.0.0,0) I try to boot on Tails by a USB key and Apple adaptator Thunderbotl/USB See the log after select Tails boot : (AE_ALREADY_EXISTS) (20190703/psparse-529 [ 0.772994] ACPI Error: Aborting method \_PR.CPU0._PDC [...] read more
linux
boot
mac
kernel-panic
tails
2votes
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
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
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
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
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
2votes
0answers

emmc drivers kernel linux crash when it is configured as loadable module

I have make a change to have mmc drivers loadable kernel module but I got a kernel crash when I tried to unload mmc_host_module using rmmod mmc_host_module. NB: I have deactivated CONFIG_MMC_CLKGATE. All insert command work correctly: insmod mmc_core.ko insmod mmc_block.ko insmod sdhci.ko insmod shdci_pltfm.ko insmod mmc_host_module.ko But when I [...] read more
c
kernel-module
mmc
qualcomm
sdhci
2votes
1answer

Optimizing global memory load in CUDA

My task : I have two matrices : A - (18 x 4194304) ; B - (18 x 1024). I have to take each 18-length vector from A and compute distance with each 18-length vector from B and find minimum distance and index. My code : __device__ void GetMin(float &dist, [...] read more
parallel-processing
cuda
2votes
3answers

Get overflow from arithmetic operations

When doing a math operation, how can I get the part that overflowed? For example, assuming 32-bit ints: unsigned int a = 0Xffffffff; unsigned int b = 0xffffffff; unsigned int c = a + b; In this case, c is 0xfffffffe, but the answer should be 0x1fffffffe. How do I [...] read more
c
math
integer-overflow
2votes
2answers

Is there a way to prevent the compiler to mess with inline assembly

So I have this piece of "dumb" mixed C code and ARM assembly int main(int argc, char ** argv) { register int val asm("r0"); register volatile int dummy asm("r2"); register int res asm("r3"); val = atoi(argv[1]); res = 0xfffffff; dummy = 0xffffffff; asm volatile( "cmp r0, #0 \n" "beq edest [...] read more
c
arm
inline-assembly
2votes
1answer

What's the largest possible Logical Cluster Number (LCN) on an NTFS volume?

By spec, NTFS partitions can have up to 263 - 1 logical clusters. But when I tried to calculate what size drive I'd need to test values greater than 32bits, I ran into a problem. Doing the math, a 4k cluster size with 0xFFFFFFFF + 1 clusters results in 17,592,186,044,416 [...] read more
ntfs
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
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
4answers

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
1vote
1answer

Debian not detecting NVMe, ASUS Zenbook UX430UA

I'm trying to set up a Win 10 / Debian 10 dual boot on an Asus UX430UA that I've just bought new. I replaced the OEM SATA SSD with a larger NVMe SSD (ADATA XPG SX8200) and am trying to install both OS's on the same SSD, as I've done [...] read more
linux
debian
ssd
asus-laptop
nvme
1vote
1answer

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
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
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
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
1vote
1answer

AMD VEGA64 crash on kernel > 4.15

So while trying to run Kernel 4.19.39, 5.0.13 and 5.1 they freeze seconds after starting Steam or Overwatch (BattleNet client). Currently running 4.15 which runs just fine and stable. I have done the following: * GRUB_CMDLINE_LINUX_DEFAULT="splash idle=nomwait" * the typical power supply option * Updated BIOS (from AGESA 1.0.0.4 to [...] read more
linux-kernel
vega
1vote
4answers

Use of Xil_Out32 in Xilinx SDK

In Vivado I succesfully made a simple blockdiagram to control the LEDs of my Zybo board. I can observe that the offset address for my LEDs is: 0x4120 0000 and the High Address is 0x4120 FFFF. Now when I go to the SDK: #include <xil_printf.h> #include <xil_types.h> #include "platform.h" #include [...] read more
fpga
xilinx
zynq
vivado
1vote
0answers

Overflowed bytes different than those I see on GDB?

I am trying to do the ProtoStar stack5 challenge. I know the solution (following a write up), but I am trying to come up with a different approach. Here is the source code for the program we are trying to execute shellcode on: #include <stdlib.h> #include <unistd.h> #include <stdio.h> #include [...] read more
c
security
debugging
gdb
buffer-overflow
1vote
1answer

Mysterious memory write protection

I'm implementing a serial bootloader on an ATSAME51N20A (Cortex-M4). I'm reading in packets over UART, and writing them to internal flash. For some memory addresses the flash writes work fine, and for others it doesn't work at all. Here is the datasheet. I have checked all the register configurations that [...] read more
c
microcontroller
bootloader
cortex-m
1vote
2answers

Android Canvas.drawString display problem

I encounter this problem when displaying text on SurfaceView, some chars can climb up on others, code is here: private static void fakeDraw(Canvas c) { Paint mPaint = new Paint(); int color = 0xff000000; mPaint.setColor(color); mPaint.setStrokeWidth(2); mPaint.setStyle(Style.FILL); mPaint.setAntiAlias(true); FontMetricsInt fm = mPaint.getFontMetricsInt(); int fh = Math.abs(fm.top); int left = 0; [...] read more
android
canvas
metrics
drawtext
1vote
1answer

Accessing errno.h in assembly language

I want to access errno present in errno.h in assembly language in order to handle errors of write function call. I found somewhere that make call to _error in assembly language for this purpose but it is throwing errors as : ExitNewShell.asm:71: error: symbol `_error' undefined ExitNewShell.asm:85: error: symbol `_error' [...] read more
linux
assembly
error-handling
x86
system-calls
1vote
2answers

pinch zoom the layout in android

This is the zoom the layout. public class Zoom extends FrameLayout { /** * Zooming view listener interface. * * @author karooolek * */ public interface ZoomViewListener { void onZoomStarted(float zoom, float zoomx, float zoomy); void onZooming(float zoom, float zoomx, float zoomy); void onZoomEnded(float zoom, float zoomx, float zoomy); } [...] read more
android
pinchzoom
1vote
0answers

Nested If Blocks in Assembly

I need help interpreting this assembly code. Given that it resembles a triply-nested if-block. Let num=0x708, flag=-1; The first condition is straightforward, if(num& 0x3 == 0). However, the next second and third conditions are lengthy; the operations are the same, but the numbers are different. Is there anything meaningful these [...] read more
assembly
x86-64
1vote
0answers

Problems printing the memory values with virtual memory enabled

Github repo: https://github.com/kssuraaj28/OS/tree/branched_OS I want to get a simple routine that prints out the E820 memory map, which is located at physical address 0x1000. (I get this via the BIOS int 0xE820 and store the corresponding structure at 0x1000 - my bootloader does this). I also enable paging in my [...] read more
c
assembly
x86
paging
osdev
1vote
0answers

java.lang.UnsatisfiedLinkError: Test.sayHello()[Ljava/util/Properties;

event.cpp #include <jni.h> #include "Test.h" #include <windows.h> #include <stdio.h> #include <bits/stdc++.h> #include <winbase.h> #include<string.h> #include <iostream> #include<vector> #define BUFFER_SIZE 1024*128 #define MAX_TIMESTAMP_LEN 23 + 1 #define MAX_WORD_LEN 1000 using namespace std; struct SearchRecord { char* type; char* time; char* source; char* eid; }; int FillEventRecordDetails(std::vector<SearchRecord*>* searchRecordResult ){ HANDLE h; int [...] read more
java
java-native-interface
1vote
0answers

How to Display a Windows event Log details in jni the return data must be array of properties

eventJava.java import java.util.*; public class eventJava{ static{ System.loadLibrary("event"); } public native Properties[] sayHello(); public static void main(String[] args) { try { Properties[] records = new Properties[1000]; records = new sayHello(); } catch (UnsatisfiedLinkError e) { System.out.println("Couldn't call native function.\n" + e); } // Create an instance and invoke the native [...] read more
java
c++
java-native-interface
1vote
1answer

Do I have to change param's type when migrating my lib to 64bit?

I am migrating my lib from 32bit to 64bit. The library is written in C. Say for the following API: void foo(uint32 var) Do I have to change the type of var to uint64 in any circumstances? What if max of var is not greater than 0xffffffff? read more
c
64-bit
1vote
1answer

Is `__shfl_sync` broken for 64-bit?

I have implemented a warp-wide and block-wide reduction using shuffle instructions. Everything works fine when I use 32-bit types, but for 64-bit I always get 0 as a result. To my knowledge, shuffling supports 64-bit arguments. What am I missing? #include <stdio.h> template<typename T> inline __device__ T warpRegSumTest(T val) { [...] read more
cuda
1vote
1answer

Cloud Run app responds with "503 Service Unavailable" when using Micronaut HTTP Client

My application is based on Micronaut and GraalVM (java 11) and does a simple call to http://httpbin.org/get: @Controller("/api") class HelloWorld( @Client("http://httpbin.org") private val httpClient: RxHttpClient ) { private val logger = LoggerFactory.getLogger(javaClass) @Get("/hello") fun hello(): String { return "Hello World!" } @Get("/fb") fun fb(): Flowable<String> { logger.info("Trying to call FB") [...] read more
kotlin
micronaut
google-cloud-run
graalvm
micronaut-client
1vote
0answers

Timer as milliseconds counter

I set a timer to count 500us ticks TIM_InitStruct.Prescaler = (uint16_t)40000-1; //SYSCLK = 80Mhz – 80Mhz/40000 = 500us TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP; TIM_InitStruct.Autoreload = 0xFFFFFFFF; //TIM2 – 32-bit counter TIM_InitStruct.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1; TIM_InitStruct.RepetitionCounter = (uint8_t)0x00; LL_TIM_Init(TIM2, &TIM_InitStruct); I get the counter uint32_t TIM_GetTimeStamp_ms(TIM_TypeDef * TIMx) { //timer 32-bit volatile uint32_t time_stamp [...] read more
stm32
1vote
0answers

Reboot loop when enabling interrupts with sti

Whenever I try to enable interrupts using the sti command, the emulator instantly reboots. I am executing the following code in protected mode on bootup: void* idt = (void*) 0x00000; struct { uint16_t length; void* base; } __attribute__((packed)) IDTR = {128, idt}; asm ("lidt %0" : : "m"(IDTR)); asm ("sti"); [...] read more
gcc
x86
interrupt
osdev
protected-mode
1vote
1answer

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
1vote
0answers

HAProxy transparent, iproute2, iptables connmark

I'm trying to achieve high available transparent HAProxy setup. For testing purposes I have the next setup (simplified sceme) lb1 [10.208.10.10] ----\ ---- backend1 [10.208.10.100] lb2 [10.208.10.11] ----/ Will not provide configuration on the lb{1,2}. It works totally fine. On the backend there is iptables rules to mark connections by [...] read more
linux
routing
haproxy
iptables
transparent
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
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

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
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
0votes
2answers

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
3answers

Disable/pause AHK script while game is minimized

I have an AHK script that allows me to bind joystick presses to keystrokes. These keystrokes are used to trigger functions in a trainer that runs in the background while I play a game. The script works fine, but the problem is that the joystick bindings send unwanted input to [...] read more
script
autohotkey
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

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
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
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

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
0votes
0answers

PCI error handler in kernel driver never called, even when device is turned off

I'm writing a linux kernel device driver for a custom PCIe device. An user space application is mmapped to this device and frequently accessing its memory (read and write). The PCIe device is driven by an external power supply which may be turned off during runtime. Whenever the device is [...] read more
c
linux
linux-kernel
pci-e
pci-bus
0votes
1answer

Conveyor with Flutter - Handshake error when running .net web app locally

I am using Conveyor (a Visual Studio 2019 extension) to have my ASP.NET Core available to android emulators. This has worked perfectly up until now. I have developed Xamarin apps, UWP apps and used it before for a native Android app at which this works fine. But on the current [...] read more
android
ssl
flutter
dart
0votes
0answers

Firebase Dynamic Link doesn't load the right route in Flutter (Android)

I have a problem with Dynamic Links (Fireabase) to load the right route when clicking an url. 1. I setup a link Review /review in Firebase Dynamic Links 2. I added SHA 1 and SHA 256 codes to the Android App 3. The app starts well and it also tracks [...] read more
android
firebase
flutter
dynamic-linking
firebase-dynamic-links
0votes
0answers

How to create nested Navigation in Flutter?

Basically there will be a main "part" in my App after logging in which only contains a custom Bottom Navigation Bar for now. Now, there are multiple Navigation Items in it, which should display different screens for every one of them like home_screen, map_screen, search_screen and so on, which then [...] read more
android
ios
flutter
dart
navigation
0votes
3answers

C - CRC32 checksum does not match Wireshark on Ethernet Frame Check Sequence

I'm using an online CRC-32 calculator to check that my output is correct however it seems that Wireshark has a different expected FCS for the ethernet packet. message2 is the ethernet frame minus the FCS as seen in Wireshark #include <stdio.h> #include <stdint.h> unsigned int crc32b(unsigned char *message) { int [...] read more
c
network-programming
wireshark
ethernet
0votes
1answer

How to intercept special IEEE 802.15.4 frames on OpenThread?

I'm new to openthread and got a minimal Thread network running on two Makerdiary USB dongles based on nRF52840. Now I'd like to intercept special IEEE 802.15.4 frames and process them separately, e.g. from an energy harvesting switch. The MAC header looks like this: * Frame Control: 0x0801 (use short [...] read more
openthread
0votes
0answers

How to invoke platform specific driver in host machine?

I am writing a dummy PHY driver as a LKM. This is a platform driver and I can't call the driver probe since it depends on the compatible string. How can I make my driver invoke probe in my host machine, which is running Ubuntu 18.04, kernel version - 5.3.0-40-generic. [...] read more
c
linux-kernel
linux-device-driver
kernel-module
0votes
0answers

OpenCV tutorial problems

I am doing a few basic tutorial on OpenCV. However on this: " https://docs.opencv.org/master/d4/d14/tutorial_windows_visual_studio_image_watch.html " tutorial I am running into problems. Here is my code: #include <opencv2/opencv.hpp> using namespace cv; int main(int argc, char** argv) { char* imageName = argv[1]; Mat image; image = imread(imageName, IMREAD_COLOR); if (argc != 2 [...] read more
c++
opencv
visual-studio-2019
0votes
3answers

Why does my ESP32 keep on reseting after startup?

I have wired up my ESP32 and after I power it, it keeps on restarting with the message: rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:1 load:0x3fff0018,len:4 load:0x3fff001c,len:812 load:0xffffffff,len:-1 ets Jun 8 2016 00:22:57 rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:1 load:0x3fff0018,len:4 load:0x3fff001c,len:812 load:0xffffffff,len:-1 ets [...] read more
c
arduino-ide
esp32
0votes
0answers

Cocos2dx Collision : onContactBegin fired but collision check condition fail always

I have 3 Objects in game. Falling Ball, Upward moving Steps, Coins Now no problem with game play, I need steps and ball collision place to add sound effects.now onContactBegin fired twice for ball and steps collision. Once contact begin onContactBegin fired, also once it loose contact then onContactBegin fired [...] read more
c++
ios
iphone
xcode
cocos2d-x
0votes
1answer

How to activate OpenGL 3.3 core profile in lvvmpipe software renderer?

I have a Linux system with Mesa3D and llvmpipe software driver. glxinfo reports Extended renderer info (GLX_MESA_query_renderer): Vendor: VMware, Inc. (0xffffffff) Device: llvmpipe (LLVM 9.0, 128 bits) (0xffffffff) Version: 19.2.8 Accelerated: no Video memory: 65482MB Unified memory: no Preferred profile: core (0x1) Max core profile version: 3.3 Max compat profile [...] read more
linux
opengl
virtual
renderer
mesa
0votes
3answers

How do i convert RGB color to hexadecimal in Java

I've searched everywhere, but i couldn't find a suiting solution. I have a RGB color that i want to convert to this format: 0xffffffff Many answers convert it to this format: #ffffff Does anyone know how to convert it to this format (0xffffffff)? EDIT: Solved! I actually needed a int [...] read more
java
string
int
hex
rgb
0votes
1answer

Is bitset the right container to manipulate big data then move the results into memory?

I am trying to generate a 512bit pattern where the word 0xdeadbeef keeps rotating (shifted left by one) across the 512bits, each time I want to right the data to memory. Baiscally, 0xffffffff.......deadbeefffffffff (512 bits total). Keep shifting the deadbeef part by one and after each time write the whole [...] read more
c++
memory
bitset
0votes
0answers

Operation timed out,python,CVE-2009-2629

In my opinion, it just has a default timeout, so it turns off after 860 seconds. This is my code: # # exploit by brainsmoke # # nginx 0.6.32-2 i386 (Debian) # # Based on Aaron Conole's exploit: http://www.exploit-db.com/exploits/14830/ # import sys, socket, select, time host, port, = sys.argv[1:3] uri_data, [...] read more
python
python-2.7
python-requests
0votes
0answers

Expand AnimatedContainer to its child

I've got an AnimatedContainer which is able to change its height by an Inkwell with onTap. The reason is that the Container should show all TextSpans of RichText. My problem is that I have no idea how to get the height of the onTap flexible. If I add more TextSpans [...] read more
flutter
flutter-animation
0votes
0answers

What does the `generateRandomNumber void` call in Pyfingerprint do?

i am trying to develop a fingerprint application in python. i'm storing fingerprints in database as strings. Like > storedPrint = "fb04e6cd868bd1fc265a69ef490deb0e5657d090f2bc249ad18886aa103ec717" i'm using pyfinger in my project. It is successful but it's compare of read finger is slow. pyfinger print has generaterandomnumber void . what does that void do? [...] read more
python
fingerprint
0votes
0answers

Cocos2d-x with Physics Editor - EventListenerPhysicsContact not fired

If I force reset CategoryBitmask and CollisionBitmask in code then contact listener fired. Why not its not work with physics editor…what’s my mistake with physics editor setup ? Hero, Coins, Bomb - 3 Objects. here Hero must collide with Coins and Bomb. Here is Code to force set: PhysicsShapeCache *shapeCache [...] read more
ios
iphone
xcode
cocos2d-x
physicseditor
0votes
0answers

Display colors from an array list in second activity's background = app crash (log provided)

I'm new at this and any help is appreciated! -=) I have colors in an array list that are chosen in the settings activity using checkboxes. I want these to be displayed in the sequence activity's background in a loop. The colors are from the "colors.xml" values. Currently the app [...] read more
java
android-studio
android-intent
colors
bundle
0votes
1answer

Camera2api How to solve ? E/BufferQueueProducer: dequeueBuffer: attempting to exceed the max dequeued buffer count (4)

I am using Samsung-A10 with sdk 28 I am trying to take images using the camera2api but always after collecting 14 frames I get I/com.oculid.daq: NativeAlloc concurrent copying GC freed 3481(447KB) AllocSpace objects, 33(1580KB) LOS objects, 49% free, 3MB/7MB, paused 149us total 174.997ms D/NetworkManagementSocketTagger: tagSocket(92) with statsTag=0xffffffff, statsUid=-1 D/NetworkManagementSocketTagger: tagSocket(100) [...] read more
android
android-camera2
0votes
1answer

Image doesn't fill its parent

I tried to load image as decoration for parent container but had the same result. I also couldn't find a way to load svg to decoration, so I stopped at Stack. Here is my code: class MainPageViewItem extends StatelessWidget { final mainPageViewItem; MainPageViewItem(this.mainPageViewItem); @override Widget build(BuildContext context) { return Container( [...] read more
flutter
dart
0votes
1answer

FormatException: Invalid radix-16 number (at character 1)

I was able to pinpoint the issue to this function, but I'm unsure of how to fix it. Color colorLuminance(String hex, double lum){ // Verifying & extending hex length if (hex.length < 6) { hex = hex[0]+hex[0]+hex[1]+hex[1]+hex[2]+hex[2]; } // Convert to decimal and change luminosity var rgb = "", i; [...] read more
flutter
formatexception
radix
0votes
2answers

Flutter : raised button width issue

I have issue with raised button on flutter, my codes ran without error but visually the raised button have background and taking too much width, I want get rid of it. This is the code: Widget _loginButton() { return Column( children: <Widget>[ RaisedButton( child: Container( child: Text( 'SUBMIT', style: TextStyle( [...] read more
flutter
dart
flutter-layout
0votes
1answer

State not update when PageView change current position

I'm new member in Flutter. I create a PageView and when page change position I need update text. Here is my code : import 'dart:math'; import 'package:flutter/material.dart'; void main() => runApp(new MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Demo', theme: ThemeData( primarySwatch: [...] read more
flutter
0votes
0answers

Duration is speed up 10 times

I am encountering a very strange issue with Duration in my welcome screen in two occasions. First, I placed the icon with AvatarGlow and I set: duration: const Duration(seconds: 5) Second, I am using delayed animations to build up the welcome screen: DelayedAnimation( child: Row( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ ], [...] read more
android
flutter
dart
0votes
2answers

Android changing background color from different activity

I'm trying to change the backgroud color of my main activity. From the menu, I select settings and brings me into another activity with settings. When I click on my checkbox to change the backgroud, it crashes. I'm trying to change the backgroud of the main activity view. LinearLayout is [...] read more
android
android-layout
view
0votes
1answer

Failed attaching debugger to local docker linux container from visual studio 2019

So I have simple hello world .net core application setup on my local machine running on docker container using docker-compose The problem is when I tried to attach debugger from vs2019 using Debug -> Attach to Process -> ConnectionType Docker(Linux Container) -> select the process and hit attach. I got [...] read more
docker
asp.net-core
docker-compose
0votes
1answer

Can eBPF's perf_submit() be used in a socket_filter program as well?

So I was trying to send some data from the kernel space program to the user space program using perf_submit. I've done some studies and here(https://github.com/iovisor/bcc/issues/2423), yonghong-song answered(the last comment) that a socket_filter program can not access bpf_perf_event_output helper and therefore it can only be used for tracing program types. [...] read more
bpf
ebpf
bcc-bpf
0votes
0answers

Clion compiler error. not sure how to fix or what ive done wrong

CMake Error at C:/Program Files/JetBrains/CLion 2019.2.4/bin/cmake/win/share/cmake-3.15/Modules/CMakeTestCCompiler.cmake:60 (message): The C compiler "C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.24.28314/bin/Hostx86/x86/cl.exe" is not able to compile a simple test program. It fails with the following output: Change Dir: C:/Users/Connor/CLionProjects/untitled6/cmake-build-debug/CMakeFiles/CMakeTmp Run Build Command(s):nmake /nologo cmTC_5b714\fast && "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\bin\HostX86\x86\nmake.exe" -f CMakeFiles\cmTC_5b714.dir\build.make /nologo -L CMakeFiles\cmTC_5b714.dir\build Building [...] read more
clion
0votes
1answer

C Programming Registers Structure

Trying to create a registers structure on a 64 bit machine and extract it. There are 7 registers in total, 2 registers are 4 bits while 3 registers are 8 bits and last 2 are 16 bits. How would I be able to create a registers structure and extract it. [...] read more
c
function
hex
0votes
1answer

Mono csharp AOT Optimizations

I am starting to learn C#, coming from a C++ background. I wanted to learn about the C# memory model and compare it to that of C++. In doing so I found the article The C# Memory Model in Theory and in Practice. So far, nothing is that surprising, but [...] read more
c#
c++
mono
compiler-optimization
0votes
1answer

How can I create custom endpoint with post and get methods on wordpress api

I'm trying to make a custom endpoint, for example: https://localhostname.com/wp-json/company_name/settings Where I'll keep some settings like theme colors and other things, but it seems there are many ways to do that and I just want the simplest way. All the searching on the web is making me really confused. So [...] read more
wordpress
wordpress-rest-api
0votes
0answers

Antialiased backbuffer flickering in DX9

im trying to render transparent grey scene as a death indicator and im having a trouble with flickering only when multisampling is enabled! I tried to load texture from a file instead of having it raw like it is right now and i also tried different swap effects and different [...] read more
c++
directx-9
0votes
0answers

is signed type suppose to be 32-bit?

I am testing on C data size with following program #include <stdio.h> #define MAXOF(n) (typeof(n))(-1) #define hexfmt "%#lx" #define printtype(n) \ {\ n _a; \ printf("%25s \t(%d bytes)\t " hexfmt "\n",#n,sizeof(n), MAXOF(_a) );\ } int main(int argc, char const *argv[]) { printtype(signed char); printtype(unsigned char); printtype(signed short); printtype(unsigned short); printtype(signed [...] read more
c
0votes
1answer

How to split a dataset into a train and test dataset using hashcode method

I am following the code of the Hands on Machine learning with Sci-kit learn and tensorflow 2nd edition. In the creating train and test dataset section they followed this procedure to create the training and testing dataset as follows: from zlib import crc32 def test_set_check(identifier, test_ratio): return crc32(np.int64(identifier)) & 0xffffffff [...] read more
machine-learning
train-test-split
0votes
0answers

MySQL not starting on AMPPS 3.8 on iMac/OS X

I am running AMPPS 3.8 on OS X (Mojave v10.14) After my HD unexpectedly died, I replaced the HD and reloaded my latest backup. MySQL does not load/run in AMMPPS :( My expectation was that the AMPPS would work as expected (Apache/php 7.1/MySQL would all run per usual). In attempting [...] read more
mysql
macos
operating-system
webserver
0votes
2answers

How to send String List to TabBar pages flutter

I made a json request on my main page. It returns a list of values. I want to send these values to one of my tabBar pages. I have little idea how to go about it guys. TabOptions.dart class Choice { final String title; final IconData icon; const Choice({this.title, this.icon}); [...] read more
flutter
dart
tabbar
0votes
2answers

Delete from a derived table in SQL Server?

I am studying the query in the answer of the post IN operator in SQL Statement Does not work?, as below: DELETE t FROM (SELECT t.*, ROW_NUMBER(*) OVER (PARTITION BY P ORDER BY ABS((P & 0xFFFFFFFF) * 256 - F) as seqnum FROM MyTable t ) t WHERE seqnum > [...] read more
sql-server
subquery
derived-table
0votes
4answers

IN operator in SQL Statement Does not work?

In SQL Server, I have a table MyTable, with the following 3 columns, P(bigint), F(bigint), D(bigint). Now what I need to do is to group all records by same P value, then in each group, calculate the following value: V = ABS((P & 0xFFFFFFFF) * 256 - F) for each [...] read more
sql
sql-server
0votes
0answers

Animate linear gradient on shader mask

Hi I'm using a linear gradient within a shader mask to apply a gradient to an Icon code below: child: LinearGradientMask( colors: [Color(0xFF21A9E4), Color(0xFF6152E7)], child: Icon( Icons.power_settings_new, size: 90, color: Color(0xFFFFFFFF), ), ) class LinearGradientMask extends StatelessWidget { LinearGradientMask({this.child, this.colors}); final Widget child; final List<Color> colors; @override Widget build(BuildContext context) [...] read more
flutter
flutter-animation
0votes
2answers

Flutter - change color on another button tap

I have 5x5 grid of 5xTableRow -> 5xFittedBox. With the tap on the top right button, I want it to shuffle colors that are described in an array (see image). Array of boxes [https://i.stack.imgur.com/x3COQ.png] I tried with the "OnChanged" and "onPressed", but the problem is I don't know how to [...] read more
flutter
dart
identifier
0votes
0answers

How to retrieve data from firebase into RecyclerviewView based on boolean condition

I want to retrieve data from firebase. i am storing those data into firebase recyclerview adapter. now i have requirement that all the data should be sorted based on boolean value. for example all true value fields come first and false value should come once true data finished. like in [...] read more
firebase
firebase-realtime-database
android-recyclerview
recycler-adapter
0votes
0answers

Striped down kernel take long time to load on Raspberry Pi 4

I'm just trying to customize the kernel configuration for Raspberry Pi 4B, to achieve a compact system image and quick startup, but as we can see in the logs there's approximate ~4.0s to start executing my 4.2MB kernel. * Logs: 23:20:06.198 -> 23:20:06.198 -> PM_RSTS: 0x00001000 23:20:06.198 -> RPi: BOOTLOADER [...] read more
linux-kernel
buildroot
raspberry-pi4
0votes
0answers

How to get the seed according to the MT19937 array in python's random module?

I use the random.seed() to set a seed for random module, for example: >>> import random >>> random.seed(123456) Then i use random.getstate() to get the MT19937 array, it should be 624 32-bit integers: >>> MT = random.getstate()[1][:-1] >>> len(MT) 624 But when i check the value of these 624 numbers, [...] read more
python-3.x
random
0votes
1answer

Can't upload picture to controller (FormFile, ASP .NET)

I am develop gallery application and need to upload files, but can't do this. When i take image and press Sumbit, my program closes and give me exit code -1 (0xffffffff).I take a break point on my controller and i see that it did not call. Later i try again [...] read more
asp.net-core
razor
file-upload
controller
iformfile
0votes
6answers

How to change only the back arrow in toolbar?

I'm using getSupportedActionBar().setTitle("This Phone"); I have managed to change the title color to white by using Toolbar.setTitleTextColor(0xFFFFFFFF); How do I change the back arrow key color to white too? read more
android
android-layout
android-relativelayout
0votes
0answers

facing problem when running MQTT and HTTP praralelly in BG96

I have using BG96 with ESP32 on UART2. I am using an HTTP connection, during HTTP I also want to receive MQTT data. But during HTTP data if the publish some message, it stuck and reboots. the log here. BG><../main/lte_lib.c><6218><lte_http_read_ota>HTTP RAW DATA:**OK**** +QMTRECV: 1,0,"device/bc-dd-c2-d3-de-7c/bc-dd-c2-d3-01/16576/desired"," {** "OUTSIDE_COMM_CODE":** {** "Opcode 1":"0x0E",** "Opcode [...] read more
http
mqtt
freertos
esp32
0votes
0answers

How to display number of fragment in a listview item?

I am lot wasting my time to search & create some code to development, but not find any solution, I am newer in android. Please help me. I got following error > Binary XML file line #15: Duplicate id 0x7f07002e, tag 0, or parent id 0xffffffff with another fragment for [...] read more
android
android-fragments
android-listview
android-custom-view
0votes
1answer

CLion cannot compile simple test program with Visual Studio

- The C compiler identification is MSVC 19.16.27035.0 -- The CXX compiler identification is MSVC 19.16.27035.0 -- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx64/x64/cl.exe -- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx64/x64/cl.exe -- broken CMake Error at C:/Program Files/JetBrains/CLion 2019.1.3/bin/cmake/win/share/cmake-3.14/Modules/CMakeTestCCompiler.cmake:60 (message): The C compiler [...] read more
c++
cmake
visual-studio-2017
clion
0votes
0answers

STM32F411RE UART not working with IAR debugger

I am currently learning to work with stm32f411re. I use PA9/10 as TX and RX with baud rate 9600 and 1 start 8 bit word and 1 stop without parity. I connected PA9/PA10 with FTDI to my PC and i am trying to send from serial terminal. Trying to do [...] read more
stm32
uart
iar
stm32f4
usart
0votes
0answers

Fragment facing issues with print adapter

I have a program where I have to print a lot of documents, sometimes up to 300 pages. What I am doing is creating a custom document and printing it using an adapter. But when I call the fragment the print intent is called twice and one overlaps the other [...] read more
java
android
android-studio
android-fragments
0votes
1answer

Viewing the exact memory range that a linker 'uses' for a executable binary

I am doing a bit of OSdev, and I've been trying to implement memory management in my kernel. I have started off with a physical memory manager (this is a 32 bit OS). The idea is to keep a table of bits where we allocate a bit per 4K physical [...] read more
c
x86
linker
kernel
osdev
0votes
0answers

Expand or any other flex widget inside a ListView item

I am having problems getting my layout right... I need a somewhat advanced item in my ListView. If you see this screenshot:enter image description here [https://i.stack.imgur.com/Dq9Bz.png] My intention was to have the background image (lowest/first item in the stack) to stretch and fill the entire height, and the blue in [...] read more
flutter
flutter-listview
0votes
0answers

ListView.builder with dynamic height of items

I have a ListView with dynamic content where I would like every item to have dynamic height based on their content, but if I do not set a fixed height of every item I get the error > package:flutter/src/rendering/sliver_multi_box_adaptor.dart': Failed assertion: line 549 pos 12: 'child.hasSize': is not true. Here [...] read more
flutter
flutter-listview
0votes
0answers

Is it possible to calculate authentication key within the IPsec/L2TP tunnel?

I have established IPsec/L2TP tunnel. I can retrieve all secret information, using the ip xfrm state command. Example of output: src 192.168.1.105 dst 58.93.199.252 proto esp spi 0x047b9a7f reqid 1 mode transport replay-window 32 auth-trunc hmac(sha1) 0x4e7b5739049a9ed7bc43255991bc1ff71b02de0b 96 enc cbc(aes) 0x50d5bbef1c5e5ccda33113f76140901b753318d0c1c10e2588137fa454a39076 encap type espinudp sport 4500 dport 4500 addr 0.0.0.0 [...] read more
encryption
hmac
ipsec
0votes
1answer

Using Python to return pointer to already existing memory address

On Python, using ctypes if applicable, how can I return the value a memory address is pointing to? For instance- when I boot up my x86 PC, let's say the address 0xfffff800 points to a memory address of 0xffffffff Using Python, how do I extract the value 0xfffff800 is pointing [...] read more
c
pointers
ctypes
0votes
1answer

Using tc filter together with Snort

I need to add delay to packets after doing some modification using the SNORT inline module. However, I cannot seem to get the packets to match a filter using tc filter ... It always matches the default filter. The commands I am using are stated below: sudo tc qdisc del [...] read more
tc
snort
0votes
0answers

Samsung NVMe disappears when server on average to high load

Hello to the community! Let me get into the details of the problem itself. We have a total of 6 SuperMicro Servers in a cluster. The problem occurs only in 3 them, which are the newest generation. The same thing happened on all three nodes (different times, same day). I [...] read more
xen
glusterfs
supermicro
pci-express
nvme
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
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
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
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
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

ipfw dummynet per ip fair traffic shaping

I want to shape traffic in such way, that no specific user could exhaust WAN connection that much so other users would be affected. I have ISP link with 100Mbits/s bandwidth and sometimes some users can exhaust it when they download something from internet or via vpn from smb in [...] read more
firewall
freebsd
ipfw
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

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
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
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

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
-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
-1votes
1answer

Is it possible to artificially trigger ReadDirectoryChangesW?

I'm creating an application for changing file metadata. I'd prefer that metadata edits not affect a file's modified date, so I'd like to suppress modification-date changes by doing this: FILETIME ft = { 0xFFFFFFFF, 0xFFFFFFFF }; SetFileTime(hFile, NULL, NULL, &ft); The only downside is that this apparently results in ReadDirectoryChangesW [...] read more
c++
windows
shell
winapi
metadata
-1votes
0answers

Arduino Uno Data logging code Help Needed

I am coding an Arduino sketch to acquire GPS data and save the output to an SD card. The code works for both the GPS reader and the Datalogger independently of each other, but I am having a hard time writing the GPS data to the SD Card. The GPS [...] read more
function
arduino
gps
arduino-uno
sd-card
-1votes
0answers

How to exit while loop with IRRemote library

I'm trying to write some code to control a WS2812B LED strip using an IR remote using the FastLED library. I'm able to control the fill_solid and BRIGHTNESS cases properly, but I'm having trouble with the 0xFFA25D ("CH-") case. I want it to be able to run continuously until another [...] read more
arduino
arduino-uno
arduino-ide
fastled
-1votes
3answers

Flutter - cannot use Flexible inside Padding for text wrapping purpose

In my flutter app, I want to have a card and four boxes aligned horizontally with equal width and height inside it. Code follows ; @override Widget build(BuildContext context) { return MaterialApp( home: Scaffold( body: Container( padding: EdgeInsets.fromLTRB(20,10,10,0), height: 220, width: double.maxFinite, child: Card( elevation: 5, child: Column( children: <Widget>[ [...] read more
flutter
flutter-layout
word-wrap
-1votes
2answers

Windows Event Viewer xPath query doesn't work on certain strings. Escape characters?

I am trying to return an event log entry from the Windows security log using xPath (in PowerShell, in Event Viewer UI) and not succeeding. This query doesn't work, as it returns zero results event though there is are appropriate entries in the log: Get-WinEvent -FilterXPath "*[EventData[Data[@Name='CommandLine']='-ExecutionPolicy ByPass -File Do-Something.ps1']]" [...] read more
powershell
xpath
event-viewer
-1votes
1answer

Error Compiling cpp code in visual studio

I am tr to compile the following code #include "stdafx.h" #include <windows.h> #include <Winbase.h> #include <Wtsapi32.h> #include <Userenv.h> #include <malloc.h> #pragma comment(lib, "Wtsapi32.lib") #pragma comment(lib, "Userenv.lib") #define DLL_EXPORT __declspec(dllexport) // Use Unicode Character Set // Code generation Multi-threaded Debug (/MTd) // Specify the command to run LPCTSTR fixCmdLine = LPCTSTR(L"C:\\Windows\\System32\\cmd.exe"); [...] read more
c++
visual-studio
winapi
-1votes
1answer

Why does the golang.org/x/sys package encourage the use of the syscall package it's meant to replace?

I have read some Go code making use of syscall for low-level interaction with the underlying OS (e.g. Linux or Windows). I wanted to make use of the same package for native Windows development, but reading its documentation says it's deprecated in favor of golang/x/sys: $ go doc syscall package [...] read more
go
-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
-2votes
1answer

I am trying to depict what this java print statement “ (((0xFF << (i * 8)) & test)))) “ means

My assignment is to figure out what this java program written by my teacher is doing, without running it. I have attached the whole (short) program and bolded the expression I do not understand. It is apart of the first for loop, which I am also a little unclear as [...] read more
java
function
loops
-4votes
0answers

I want to solve this ... Who has the answer?

Performing hot reload... Syncing files to device Android SDK built for x86... Reloaded 0 of 546 libraries in 163ms. ════════ Exception caught by rendering library ═════════════════════════════════════════════════════ The following assertion was thrown during performLayout(): 'package:flutter/src/rendering/object.dart': Failed assertion: line 1651 pos 12: '!_debugDoingThisLayout': is not true. Either the assertion indicates an error [...] read more
flutter
dart
flutter-dependencies
flutter-animation
flutter-test
-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

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