ssh tunnel

Create a tunnel to a remote host via a gateway

    ssh -L <local-port-to-listen>:<destination-host>:<destination-port> <gateway_user>@<gateway>

This opens a local port listening for traffic on <local-port-to-listen> and forwards that traffic via the gateway (user@gateway) to the remote destination <destination-host>:<destination-port>

-f executes ssh in the background
-N means no remote command (ie: just create a tunnel)

    ssh -N -f -L 8080:destination:8080 user@gateway

Pointing your browser to localhost:8080 will connect to the ssh tunnel which forwards the data to destination:8080, going via the gateway

Fedora 16: Enable ssh

start ssh service
$ sudo systemctl start sshd.service

enable ssh service to restart upon reboot
$ sudo systemctl enable sshd.service

make sure port 22 is open
$ system-config-firewall

enable public key exchange
generate keys
$ ssh-keygen -t rsa
create ssh directory on server
$ ssh srvr_hostname "mkdir .ssh; chmod 0700 .ssh"
copy public key to server
$ scp .ssh/id_rsa.pub srvr_hostname:.ssh/authorized_keys2