You could start the ssh server on that machine with -vvv to get a
detailled, verbose logging. That does not always lead to entries making
clear what happens, but to entries you can use for googling (or asking
here).
I would also have a look at DNS - compare forward and reverse lookups (are
they the same for the "from=..." entry?), does that Centos4-Box reach the
DNS RELIABLY etc. SSH lies much emphasis on a working DNS.
Dirk
--On 11. August 2008 15:50:38 +1200 Clint Dilks <clintd@xxxxxxxxxxxxxxxxxx>
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.
Aside from this CentOS Box have only been able to test this out on some
old FC6 Machines
and they behave as I expected. Anyone got any ideas why this might be
happening ? I have compared the sshd config between the FC6 Machines and
the CentOS Box and can't spot anything that would explain the issue.
Thanks for any ideas, and have a nice day :)
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Dirk H. Schulz
IT Systems Service
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Tel. 0 80 92/86 25 68
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Technik vom Feinsten - und das nötige Tuning
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