SSH

Local port forward

• Local port 5555 gets forwarded to 25 on remote machine over ssh-host

ssh -Nf -L 5555:remote-machine:25 user@ssh-host

Socks forward

ssh -D 5555 user@remote-machine

• Now connect your firefox to socks proxy port 5555 and it will tunnel everything over it

Ignore Host key

ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no