Doing Port-Forwarding Say your email program connects to the pop3 port (110) on remotehost. This tunnels port 9110 on your local computer to port 110 on remotehost. ssh -L 9110:remotehost:110 daniel@remotehost you tell your email program to connect to port 9100 on localhost data is encrypted and connection can tunnel through a firewall or sympatico's port-block. two other switches: -N (don't run a command, just open connection) -f (fork into the background) need to be root to forward from "privilaged" local ports (lower than 1024) useful if a program won't let you change the port ssh -N -f -L 25:coder.com:25 daniel@coder.com stack 'em ssh -N -f -L 110:mailhost:110 -L 25:mailhost:25 daniel@coder.com