socket programming

[enduroist]

hi all I want to make chat program using System.Net.Sockets namespace Chat examples work fine in local area network... But I couldn't get them work on internet. I have DSL router.. I setup these on adsl: NAT(Virtual servers): Protocol: TCP, External port: 399 Internal Port:399 Internal server IP address: 192.168.1.2 (which my computer's local IP) am I missing something?

[stevepham42]

If you are trying to communicate between your computer and another computer through the internet, your internal IP wont resolve to the other computer. You may need to add your internal IP into your Router's DMZ. Another thing that may cause problems is your firewall may be blocking the port you are listening on (399)

[enduroist]

thank you for your reply... My mistake was; I was trying to connect from same computer to same computer... Anyway it's working now from another computer to my computer thanks