Hi, I am a newby in linux. I am studing the socket programming in RH9 and wrote a simple tcp client/server program and it works well when I use localhost to test. However, when I test it on two computers, the connection always timed out. I used the example program on "pont.net/socket" to test and got the same problem.
Thus I guessed it is a network configuration problem and found the two computers can not ping each other. While they can both access Internet and they are in the same LAN. Furthermore, when one computer is running in WinXP and another is in linux, the linux one can ping WinXP one while the WinXp one failed to ping Linux. I also tried "netstat -l" command when the client trying to connect to server and found the local address and foreign address are both correct, the state is SYN_SENT. I have tried to set the security lever to be "no firewall" using "system settings->security level" but no change happened.
Could anyone give me some advice how to examine and what should I do next? Any help would be greatly appreciated.

To be of any assistance we'd need a bit more info
about the networks set-up. Fixed IPs or DHCP, what
the configuration of the interfaces is like, ...

And this thread is being moved to Linux - Networking
where it will get the exposure it deserves.


Cheers,
Tink

Thanks for the reply, it is DHCP. I used ifconfig to figure out their IP address.
But actually I have no idea which network configuration should be examined and how to examine them.
Could anyone give some suggestions?