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Network Security Secure-Shell
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Re: Null-passphrase vs ssh-agent

from [Gian G. Spicuzza] Network Security [Permanent Link]
Subject: Re: Null-passphrase vs ssh-agent
Date: Mon, 13 Mar 2006 17:06:08 -0500 
Dear Patrick,

Thank you for your response. The client must meet the following conditions to successfully login:

1) Proper IP
2) Proper Private Key (null-passphrase so at night, when backups are initiated, a user does not need to be at console)
3) Appropiate command (scp or rsync)

Is there any other way of setting up keys for passwordless logins that are more secure than null-passphrases?

Thanks,

Gian

Patrick Morris wrote:

No, it's not.  If someone has the private key file, they can log in with it.
If it's got a passphrase, they need to know that, too.

Even with ssh-agent, someone has to enter the passphrase at some point.
That makes it infinetely more secure than passphraseless keys.

-----Original Message-----
From: Gian G. Spicuzza [mailto:gianspi@gsent.org] Sent: Friday, March 10, 2006 8:58 AM
To: secureshell@securityfocus.com
Subject: Null-passphrase vs ssh-agent

Hello.  I have implemented PKA with a null-passphrase instead of using
ssh-agent.  Is this just as secure as using ssh-agent?

Thank you,

Gian G Spicuzza









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