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Date:      Thu, 24 Nov 2011 13:25:16 +0200
From:      Nikos Vassiliadis <nvass@gmx.com>
To:        Odhiambo Washington <odhiambo@gmail.com>
Cc:        Ross <basarevych@gmail.com>, freebsd-questions@freebsd.org
Subject:   Re: Do you run OSSEC on 9.0?
Message-ID:  <4ECE299C.5080003@gmx.com>
In-Reply-To: <CAAdA2WMXBZdCkxas=yT=YSYu4P6HE7sUKOvZRvHdhCx9m7GnTQ@mail.gmail.com>
References:  <CANmv3=yDOqZQ0E+9EE1i3a5vXBs7D7tvQx7Ag27Rc1Ba9ZJGbQ@mail.gmail.com> <CAAdA2WMXBZdCkxas=yT=YSYu4P6HE7sUKOvZRvHdhCx9m7GnTQ@mail.gmail.com>

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Since /dev contains a special filesystem which cannot
be used for "simple" files and directories, I would say
that the IDS needs some knowledge about it and generic
file-checking rules don't apply there.

This sounds like a false alert, something must have changed
from 8 to 9 and/or the ossec port (and/or ossec signatures).

Disclaimer: I am not an ossec user!

Nikos

On 11/24/2011 11:04 AM, Odhiambo Washington wrote:
> Getting the same too, since I upgraded my 8.2 ->  9.0-PRE.
>
> Would be interested in the answers too.
>
>
> On Thu, Nov 24, 2011 at 10:32, Ross<basarevych@gmail.com>  wrote:
>
>> I am getting emails about hidden files in /dev. Before that (on 8.2)
>> everything was OK. What should I do?
>>
>>
>> OSSEC HIDS Notification.
>> 2011 Nov 24 08:17:25
>>
>> Received From: coffin->rootcheck
>> Rule: 510 fired (level 7) ->  "Host-based anomaly detection event
>> (rootcheck)."
>> Portion of the log(s):
>>
>> Files hidden inside directory '/dev'. Link count does not match number
>> of files (9,27).
>>
>>
>>
>>   --END OF NOTIFICATION
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>
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