Can I ftp a server behind a firewall? How?

Thanks

If *you* are behind the firewall, you need to either have a co-operative firewall (not likely) or use passive FTP.

If the *server* is behind the firewall, you must either use normal FTP or poke holes in the firewall.

If both you and the server are behind firewalls... well, the best option is to use passive FTP with a daemon which allows you to restrict the ports used for it, and poke a hole in the (server) firewall for that port. But that solution isn't ideal, and generally FTP should be avoided if possible.