SSH Server behind Firewall

got a Server behing NAT / Firewall ? Need Shell access to … ?

Server behind NAT/FW

user@server$ ssh -R 1234:localhost:22 my.public.jumpbox

Access Server

ssh my.public.jumpbox

user@jumpbox$ ssh -p 1234 localhost

user@server$

and you’re in :)

sha256: 81b4dc1d84f9f8bcbf5060f382853759fffa1e5824e2ae98ad5508a082db5dfd