autossh¶

use autossh to create ssh tunnel/proxy services permanently, autossh will automatically reconnect if the connection drops. good to get into remote systems when they're not available from the outside and might shut down at any time (as everything can and does!)

reverse tunnel¶

autossh -M 0 -q -f -N -o "ConnectTimeout 10" -o "ServerAliveCountMax 3" -o "ServerAliveInterval 60" -o "Port=22022" -o "ExitOnForwardFailure=yes" -R2222:localhost:22 tunnel@target

this will connect to target using port 22022 (remove this for default 22) and creates a reverse tunnel (-R) on port 2222 on target to 22 on localhost.

meaning when you connect to target you can ssh to localhost on port 2222 to end up on the device executing autossh.

how to connect:

connect to target
ssh -p2222 user@localhost
profit

permanent socks proxy¶

autossh -M 0 -q -f -N -o "ConnectTimeout 10" -o "ServerAliveCountMax 3" -o "ServerAliveInterval 60" -o "Port=22022" -o "ExitOnForwardFailure=yes" -D192.168.178.22:8081 tunnel@target

this will connect to target and by using -D192.168.178.22:8081 will provide a socks proxy on the whole interface running on 192.168.178.22 port 8081 (so everyone can use it, otherwise replace this with 127.0.0.1 for local usage only.

you can now configure your cliencts in your (home) network to use 192.168.178.22 with port 8081 as a socks5 proxy to route traffic through target