SSH configuration
2023-03-01
My Raspberry PI is part of my tailnet.
I wanted to use it as a jump box to connect to some other Tailscale hosts from machines that aren't part of the tailnet.
This can be configured by editing ~/.ssh/config (see this link for more details):
1 Host *
2 ServerAliveInterval 60
3
4 Host raspberrypi
5 HostName 192.168.1.59
6 User mario
7
8 Host remote-host
9 HostName remote-host.domain.com
10 ProxyCommand ssh -W %h:%p raspberrypi
This works even better if I use key-based authentication.
In ~/.ssh/config I can tell where the keys are:
1 Host *
2 AddKeysToAgent yes
3 UseKeychain yes
4 IdentityFile ~/.ssh/id_ed25519
and then tell the Raspberry PI to trust it via cat ~/.ssh/id_ed25519.pub | ssh username@remote_host "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys"