wait are you using ftp. to connect or ftp:// because it is ftp. , also wat port are you using to connect common ftp ports are usually 20 or 21, if you want most routers have options to forward these ports so you can read up on that if you find no other solution. It could also be the client, i have found that some ftp clients are not very user friendly, i like filezilla because it is free and simple. If for some reason you have some extreme firewall then you can check those settings because you might have told it to block your ftp client (some firewalls like norton are hardcore and do that to a lot of programs that is why i think it is crap). Well those are just some ideas i can think of right now so i would check that stuff out and get back once you fool around with your settings a bit.