On Fri, 31 Oct 2008, Henry B. Hotz wrote:

>>      VerifyReverseMapping
>> 
>>          Specifies whether sshd should try to verify  the  remote
>>          host  name and check that the resolved host name for the
>>          remote IP address maps back to the very same IP address.
>>          (A  yes  setting means "verify".) Setting this parameter
>>          to no can be useful where DNS servers might be down  and
>>          thus cause sshd to spend much time trying to resolve the
>>          client's IP address to a name. This  feature  is  useful
>>          for Internet-facing servers. The default is no.
>
>I like the option.  It should default "no" as it does.  I think there 
>ought to be more warning of the risks associated with "yes".

        Henry, note that there might be problems when using the option:

        6593370 VerifyReverseMapping in SunSSH doesn't work

-- 
Jan Pechanec

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