simple echo server

[Haris Bogdanovic]

I'm trying to implement chess server program so I started by 
implementing simple echo server.
When client is trying to connect to the server everything works fine but 
when server tries to echo what it receieved from client I get access 
denied error.
Why is that happening ?
(I put my server.py under ("m-net.arbornet.org") my user account. Is 
this the right place to put server program or is there a place on the 
Net where such applications are welcome ? )

Thanks
Haris