Strange remoting connection problem

Question

In trying to configure a .NET remoting setup over TCP, I've been having problems accepting outside connections (connections from any computer not on my LAN). I did some investigation and hit netstat -a as soon as my friend started to connect. Here's what I saw:

TCP 0.0.0.0:2594 Taylor-PC:0 LISTENING
...
TCP 192.168.1.102:2594 24-155-7-16:63588 ESTABLISHED
TCP 192.168.1.102:62488 192.168.0.100:1554 SYN_SENT

Now here's the weird part: 24.155.7.16 is my friend's IP (modified) and it says the connection is established. But the connection hangs until it times out. I then found out that 192.168.0.100 is his local address on his network. Something screwy's going on somewhere. My server and client are both TCPChannels, the latter initialized 'new TCPChannel( 0 ).' Localhost connections work when I run a client on the same machine as the server, but I can't accept remote connections. There is no port forwarding or firewall issue.

Thanks for the help

Answer 1

Does your friend's subnet have the same IP address range as your subnet (e.g. 192.168.0.*)? I've had similar problems before... more due to router configuration than anything else because of subnets with identical IP address ranges. Has he tried directly connected to the internet? Or is he or you able to change your subnet?

Answer 2

Check again the firewalls in the server side, like Windows Firewall/Internet Connection Sharing (ICS) in Services