Can I use ssh to protect services like FTP or POP?
If you want to avoid sending FTP passwords in cleartext over the net, you can use ssh to encrypt your command channel. This will still leave your data channel open to all attacks on TCP, and will not work through a firewall. You can either use ftpsshd by Per-Erik Martin at http://www.docs.uu.se/~pem/hacks/ for SSH1, or you can do this by hand. SSH1: Suppose you are on a host called myhost and want to initiate a ftp connection to ftphost.