Re: securing a unix system - suggestions on checking for intrusions

[email protected]
Newsgroups gmane.org.user-groups.linux.new-zealand.general
Message-ID <[email protected]>
On Thu, 06 Oct 2011 15:24:26 +1300, Robin Paulson wrote:
> On Thu, 06 Oct 2011 15:09:23 +1300, Bryan Baldwin wrote:
>>> me neither. any suggestions on software/script to do the former, 
>>> i.e.
>>> check every file?
>>>
>>
>> Something like this could help.
>>
>> http://www.tripwire.org/
>>
>> http://en.wikipedia.org/wiki/Open_Source_Tripwire
>
> excellent, i'll give it a whirl. but it brings up this question:
> is there anything to check the tripwire database, to ensure it hasn't
> been tampered with?

Sounds like a Russian doll problem to me. Any check you can do will 
need a check on itself and so on...

You could be reasonably sure by taking a sha1 hash of the tripwire 
database when your system is in a known good state and storing it on 
another system (encrypted if necessary).

Rob

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