How to write a script in ssh to a computer from a remote computer?

Question

I often need ssh to the server, but I can not ssh into it directly while I am connected to our VPN. So I have to ssh to another server and ssh into it from there. Is there a way I can write a script and / or shell function for this? I tried this, buit this gave me an error:

% ssh jason@server2 'ssh jason@server1'
jason@server2 password: 
Pseudo-terminal will not be allocated because stdin is not a terminal.
Permission denied, please try again.
Permission denied, please try again.
Permission denied (publickey,gssapi-with-mic,password).

(and of course the username and server name have been changed)

Answer 1

A combination of SSH connections can help you. Assuming the following layout: Client → Middman → Purpose

On the client:

ssh user@Middleman -L 1337:Destination:22

This will allow you to directly SSH to Destination from Client in another session:

On the client:

ssh user@localhost -p 1337

, ssh user @Destination. stdin , .

Answer 2

. , (, , ssh-, ).

Answer 3

, , , ssh . , . , , ssh, ssh . . , , .

Answer 4

It looks like you want to configure public key authentication between the middle machine and the end machines.

Here are some decent guides to get you started. Good luck.

http://hkn.eecs.berkeley.edu/~dhsu/ssh_public_key_howto.html

http://pkeck.myweb.uga.edu/ssh/