Re: Packet Payload

[xelerated <xelerated () gmail com>]

I should mention my only experience with this type of scenario
was on a mid size business network, using snort, the snort payload
didnt take up nearly as much space as i thought it would, i built the
machines with
40gig drives each, and would dump the database to an archive and store
it on tape
every couple of months or so.

But i like you idea of just certain types of data. Now to just figure
out which types are
best to hold on to. Honestly, I wouldnt care if the logs were purged
weekly or something, anything is better than what I have now.



On 8/29/06, Remad <listaggy () remad net> wrote:
> I hope your company has lots of money for a SAN.  I wouldn't recommend
> capturing payloads without a good reason.  It will eat diskspace big time.
> I would turn it on when you see something that you need the data for.
>
> Another choice would be to build tcpdump filter to collect payload data for
> specific types of data.  Might not get everything but 10TB of data isn't
> something you are going to find any useful info in anyways.
>
> ,Remad
>
> -----Original Message-----
> From: xelerated [mailto:xelerated () gmail com]
> Sent: Tuesday, August 29, 2006 9:32 AM
> To: pen-test () securityfocus com
> Subject: Packet Payload
>
> Im posrting this to the pen-test group, rather than firewall or IDS because
> it covers many areas.
>
> Id like to see what the pro's think about capturing and storing packet
> payloads from firewalls, ids, etc... everything rather than just loggin the
> incidents.
>
> Im trying to explain to my management how useful the payloads could be if we
> were ever to really need them, say from a forensics point of view.
> To give another example, one time I was seeing lots of firewall drops, I
> could tell what ports, src and dest. but no packet data. To everyone
> involved it looked like a worm trying to spread.
> Well in the end it wasnt, infact is was something that was nice to know
> about, but it was not hostile traffic. But if I had been able to see the
> payloads i could have seen the data request and known from the start what it
> was, or was not.
>
> What would be really great, is a whitepaper covering this, or enough
> info/facts that I could throw one together.
>
> thanks!
> Chris
>
> C|EH, CISSP
>
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