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ssh security question

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I just regenerated the keys on one of my F14 systems. I am still able to 
access systems which don't have the new public key in their 
authorized_keys file. The one thing I did differently this time was that I 
did an ssh-add after I regenerated the keys. I did the ssh-add because 
putting the new public key into the authorized_keys files of my other 
systems wasn't sufficient to give me access. After the ssh-add I could 
access the other systems, however I could also access systems that don't 
have the new authorized_keys file.

Does ssh-add keep the old keys in the authentication agent as well as the 
new key? This would negate the value of changing keys if true.

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ssh security question General Schvantzkoph <schvantzkoph@yahoo.com> - 2011-11-14 19:15 +0000
  Re: ssh security question Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-11-14 20:02 +0000
  Re: ssh security question Richard Kettlewell <rjk@greenend.org.uk> - 2011-11-14 21:05 +0000
  Re: ssh security question David Schwartz <davids@webmaster.com> - 2011-12-01 14:37 -0800

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