Is it possible for a server to be both a remote and client SSH host?

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# 1  
Old 12-15-2008
Question Is it possible for a server to be both a remote and client SSH host?


Not sure if this is possible, I have a server (SERVER1) that is currently set up as a remote SSH host. My client SSH host (SERVER2) is connecting to SERVER1 to scp a file with no password.
I now have a need to set up a third server (SERVER3) as a remote SSH host and I need SERVER1 as a client SSH host to connect to SERVER3.
Is it possible for SERVER1 to be both a remote and client SSH host?

Hopefully the question makes sense.

Thanks in advance for the help.

Last edited by tatchel; 12-15-2008 at 03:24 PM..
# 2  
Old 12-15-2008
You want connect (SERVER2) to (SERVER1) and connect (SERVER1) to (SERVER3) over ssh connection?
# 3  
Old 12-16-2008
Yes, that's correct.

# 4  
Old 12-16-2008
Yep, that's no problem. A server isn't actually ever an ssh client, it just might happen to run one as a particular user Smilie

sshd is the 'remote ssh host' and runs as root, then splits of a version of itself for each user connecting, this split off version runs as the connecting user and looks at $HOME/.ssh/ (on the 'server' side) for keys etc.

ssh is the 'client SSH host' and runs as you, it also looks in $HOME/.ssh/ (on the 'client' side).

If you want a hand laying out what keys need to go where, let us know the usernames you are using and which server they are on (or call them 'user1' etc). Smilie
# 5  
Old 12-18-2008
Sorry I did not indicate this in the original question. The user making the connection is the same on all servers.
Server2 (as user1) SSH to --> Server1
Server1 (as user1) SSH to --> Server3

user1 exists on all servers.

Let me know if this makes sense or not. Smilie

Thanks again for the help.
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