Cannot use any FTP client
 

I've recently been having trouble with my Debian box where I am unable to use any FTP service with most clients. The commandline "ftp" program, the GUI "gFTP", the apt-get script, and ncftp all just hang indefinitely trying to connect to any FTP server, though they have no trouble resolving names.
The FTP facilities of wget and Mozilla seem to work fine though, with the very same servers.
All these problems started when I moved behind a new firewall; however, every other computer on my network is having no trouble at all.

Anyone think he/she might know what's going on?

-Andrew *confused*

I think the solution to your problem is what is called "passive mode": use command 'passive' in ftp or choose "transfer in passive mode" under options/ftp in gftp.

That doesn't seem to change anything; nothing's getting further than the initial "connecting..." process still. I've also tried setting up a firewall DMZ on this machine, but that didn't change anything either.

-Andrew

I would have bet that was the problem...
Are you sure wget/mozilla work through ftp, and not through http on a ftp server? (e.g. http://ftp.it.debian.org)?
Sorry, I have no other ideas :(

It seems that I may not have tested my problem well enough before posting about it. I now suspect it's just a software problem with one or two clients, but it nonetheless seems strange that it happened at the same time.
I'll post back when I have a more useful understanding of the problem :P