Reverse SSH tunnel

Guide.md

Connect two machines on distinct networks via SSH

localhost below is meant to be used literally.

Topology example

laptop_srv  --  wifi_1
                        >  server
laptop_clt  --  wifi_2

• laptop_srv: laptop with SSH server to log into

• laptop_clt: laptop to use with SSH client

• wifi_1 and wifi_2: access points

• server: remote server accessible via SSH from both laptop_srv and laptop_clt

Set up tunnel (laptop_srv)

ssh -R 4022:localhost:22 serveruser@server

Also see http://www.howtoforge.com/reverse-ssh-tunneling.

Log in from laptop_clt to laptop_srv

ssh -l serveruser server
# on remote server:
ssh -l laptop_srv_user localhost -p 4022