[CentOS] Question about Open SSH Public Keys

Jay Leafey jay.leafey at mindless.com
Mon Aug 11 04:14:24 UTC 2008


Clint Dilks wrote:
> Hi People
> 
> I am setting up some systems with ssh public keys and as part of this I 
> am using the from directive inside .ssh/authorized_keys.  Currently I am 
> using the IP address to control the source.  eg from="10.0.0.1" but on 
> one CentOS 4 System that is up to date this will only work if I replace 
> the IP with the DNS name of the server.  I have verified that DNS is 
> resolving the DNS Name to the correct IP address on the server in 
> question and all seems to be fine.

Just grasping at straws, but does the reverse DNS zone resolve to the 
correct DNS name?  For example, if the DNS entry "bob.example.com" 
translates to 10.0.0.1, does 10.0.0.1 resolve to "bob.example.com"?

-- 
Jay Leafey - Memphis, TN
jay.leafey at mindless.com
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