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Old 04-15-2011, 09:40 PM   #1
goshng
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Registered: Sep 2010
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ssh login without password from local to remote, and further to another remove?


Hi,

I know I can ssh login without password from a local to a remote. My question is how I can ssh without password from the remote to another remote. Say, I have three machines: A, B, C where A is the local machine. I use the same private/public key pair for all the login. What I can do are:

1. ssh from A to B.
2. ssh from A to C.
3. If I am sitting in the computer B (or B is local), then I can ssh from B to C.

What I am not able to do is:
After I ssh from A to B, I cannot ssh from the B to C. When I try to ssh from B to C, it asks me a passphrase.

I think that there are something missing that I do not understand.

Thank you for your help.

Sang
 
Old 04-16-2011, 07:37 AM   #2
carltm
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Registered: Jan 2007
Location: Canton, MI
Distribution: CentOS, SuSE, Red Hat, Debian, etc.
Posts: 697

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When the keys were created for B, no passphrase was was assigned.
That is why you can use ssh without be prompted for the passphrase.

When the keys for C were created, a passphrase was given to the keys,
hence you are prompted when you use those keys.

Notice that the passphrase is not the same as a password. If you're
prompted for a password, that means that no keys are being used.

The easiest solution would be to create another set of keys for C
and do not include a passphrase.
 
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