[SOLVED] 'Double log-in' with SSH keys?

Tachtory · 06-18-2014, 06:12 PM

I recently configured my computers to not allow password login and only allow publickey access.

Prior to this using passwords I was able, on my home network, to:

Using computer 1, ssh into computer 2
While logged into computer 2, ssh into computer 3

When I try this now, I get

Code:

Permission denied (publickey,keyboard-interactive)

I tried copying the private-key of computer 1 to computer 2's .ssh directory but it didn't seem to make a difference.

evo2 · 06-18-2014, 07:21 PM

Hi,

the private key should only on computer 1, but you need to enable authentication forwarding when you ssh to computer 2. This can be done using the -A option. If this does not work you should check the output logged by sshd on computer 3. On Debian and derived systems this is usually /var/log/auth.log and on RHEL /var/log/secure. You should also run ssh with -vvv for extra verbose output.

Evo2.

Tachtory · 06-18-2014, 08:18 PM

Quote:

Originally Posted by evo2

the private key should only on computer 1, but you need to enable authentication forwarding when you ssh to computer 2. This can be done using the -A option.

That worked. Thanks!

evo2 · 06-18-2014, 08:32 PM

Hi,

Quote:

Originally Posted by Tachtory

That worked. Thanks!

Great.

Assuming that you are doing this because you can't ssh from computer 1 directly to computer 3, you might find the following thread interesting.

http://www.linuxquestions.org/questi...nd-4175506340/

You'll want to add

Code:

ForwardAgent yes

to the section corresponding to your computer 2.

In that post serverA, serverB and serverC map directly to your "computer 1", "computer 2" and "computer 3".

HTH,

Evo2.