> Kyle Claisse wrote:
>
>> I have been running DenyHosts for about few weeks now and it has more or
>> less done it's job. But just recently I noticed on my daily logwatches
>> that a few ip's were not being denied. I set the maximum number of tries
>> for any user name to be 3. But my logs clearly show more tries coming
>> from
>> ip's.
> [snip]
>>  sshd:
>>     Authentication Failures:
>>        unknown (137.82.206.83): 13 Time(s)
>>        root (64.34.105.116): 7 Time(s)
>>        unknown (222.91.92.185): 3 Time(s)
>>        unknown (host188-178-static.189-82-b.business.telecomitalia.it):
>> 3
>> Time(s)
>>        root (211.98.88.125): 1 Time(s)
>>     Invalid Users:
>>        Unknown Account: 19 Time(s)
>>
>>
>> Notice that one of the ip's (137.82.206.83) has 13 logins failures.
>> Whats
>> up with that?
>
> It depends on the scan time, if you scan say every 15 seconds and the
> attacker is going at 1 per second, then the mean case will try about 8
> times, the worst case will try 15 or probably 16 because of the time it
> takes DenyHosts to add the entry and sshd to pick it up.
>
> It will rarely ever be stopped at 3, which is the best case and only will
> happen if the attacker is going real slow.
>
>> OK Now just in case I would like to not that this is my first post in a
>> sourceforge mailing list or any mailing list for that matter. I hope it
>> went right.
>
> Looks fine ;-)
> --
> René Berber
>
>
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Is there any way to lower the scan time? Say lowered to like 1 second? Or
is that pushing it? Also how does one manually add ip addresses?

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