Enable PostgreSQL remote access- nothing seems to work

I have tried everything I can find to enable to remote access to a postgresql 8.1 database on a centos server. I am trying to connect from my windows 10 PC using pgAdmin 3. I keep getting:

The server doesn't accept connections: the connection library reports could not connect to server: Connection timed out (0x0000274C/10060) Is the server running on host "server ip" and accepting TCP/IP connections on port 5432?

This is what I have done:
pg_hba.conf added -

host  all all  "my public IP address"/32  trust  

postgresql.conf -

listen_addresses='*'  

restarted PostgreSQL

Added the following to iptables

-A INPUT -p tcp -s 0/0 --sport 1024:65535 -d "my IP"  --dport 5432 -m state --state NEW,ESTABLISHED -j ACCEPT  
-A OUTPUT -p tcp -s "my ip" --sport 5432 -d 0/0 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT  

restarted iptables

I have verified many times that I have the correct IP addresses everywhere.

Can anyone help with what I may be missing.

Update:
I stopped the iptables service and was able to connect so it is something with my iptable rules.

If you really want to enable connections without password from other machines, in the line

host  all all  "my public IP address"/32  trust

"my public IP address" should be the IP address of the machine from which you attempt the connection.

Don't forget to run pg_ctl reload to load the changed configuration file.

To be promiscuous and allow passwordless connections from everywhere, use

host  all all  0.0.0.0/0  trust

If you encounter problems, set log_connections to on in postgresql.conf and consult the log file.