I'm looking for a way to easily send commands back to my local computer, while connected to a remote host via ssh. Is this doable via tunnelling? Both systems are UNIXen.
For instance, I am connected to a remote host and through some alias "backwards" I want to do:
user@remote $ backwards echo hi
And the local machine would execute echo hi
Standard SSH implementations do not provide this functionality. You will have to connect back to your local computer:
remote$ ssh "${SSH_CONNECTION%% *}" echo hi
If you are behind a NAT, you can use SSH "remote forwarding" to make the connection:
local$ ssh -R 23456:localhost:22 remote
remote$ ssh -P 23456 localhost echo hi
(With -R, "localhost:22" is the client's "localhost".)
