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Re: Checking behind the wall



Mike Moran <mm@ee.ed.ac.uk> writes:

> Although it is good to have a properly setup firewall, I was wondering
> what else I could do to check that the machines behind it haven't been
> compromised (by an email trojan or the like)?

You can do an awful lot worse than installing AIDE for this sort of thing. 

> I was thinking of setting up a scanner (strobe/nmap/...?) to
> automatically do a scan from a cron and mail the results to me. However,
> is there any existing framework like this that I could leverage?

Have you got a central loghost with logcheck? That might make life a lot
easier (once you get the hang of ignoring stuff :)

If you were to save the results of nmap to disk for posterity, you could
see when they changed with AIDE, above. Funky.

~Tim
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