Can't telnet to freebsd box

[Frank]

Hi,

I have installed freebsd 6 on the pc and connect to the LAN. from freebsd box, I can ping other pcs on the LAN and other PCs(Windows XP) can ping freebsd box as well. But I can't  telnet to freebsd from other PCs (Windows XP). Also I have tried telnet from freebsd box to itself and also couldn't make connection. Anyone know what problem could be?

Thanks,

Frank