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Old 11-17-2006, 11:12 PM   #1
GATTACA
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SSH allow public keys only


Hello.

Is there a way to configure the SSH deamon to _only_ accept connetions via public keys? Meaning that if someone tries to SSH into a linux box and their computer doesn't have a valid key then they won't even get a login prompt?

I've not had any luck searching the forums for this one, and the sshd_config man page hasn't helped.

Thanks.
 
Old 11-17-2006, 11:18 PM   #2
randyding
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This is from man sshd_config
PasswordAuthentication
Specifies whether password authentication is allowed. The default is "yes".
 
Old 11-18-2006, 08:25 AM   #3
kaixa
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well, i think what you need is SSH with Protocol 2...
 
Old 11-18-2006, 01:18 PM   #4
chort
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You need at least:
Code:
PasswordAuthentication no
UsePAM no
and possibly
Code:
ChallengeResponseAuthentication no
Your PAM configuration might allow password authentication even if you have it turned off with PasswordAuthentication no.

PS you should always turn off SSHv1:
Code:
Protocol 2
 
Old 11-18-2006, 03:34 PM   #5
GATTACA
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Thanks chort. Your suggestions worked!

Now only users with a key are allowed to get in.

Thanks!
 
  


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