IP Forwarding problem

[Ben Pfaff]

Mike Szumlinski <szumlins@pilot.msu.edu> writes:

> I have had my Linux box setup as a router for some time, but recently 
> I've been finding out that when I go to certain sites, I get an "Illegal 
> Port Command".  I can't ftp to pilot.msu.edu from it or use a lot of 
> other things, yet stuff like ICQ and AIM work fine behind the router 
> without having to designate anything special. Any ideas?

Do you have the ftp masquerading module loaded?