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From: trains () doctorunix com
Date: Sun, 02 Apr 2006 21:09:38 -0500
Quoting James_gmail-ij <ij3n0spam () gmail com>:
Other than removing Kazaa and preventing installation, how else can I block
it from being used?
At the firewall, with some additonal programming. There was an
article in one of
the Linux Magazines - LinuxJournal? - some time ago. Dont have the
Mag. to hand.
I remember this article: http://linuxjournal.com/article/6945
There are various modes, designed to evade trivial block rules. The
the protocols in detail and describes how to defeat it completely.
At the time, I used the article's info to put together some snort
rules, etc, but the protocol proved to be very adaptive. and it has
mutated since 2003.
My current best effort is to not block the initial conversation setup.
the same goes for bittorrent. If you try to block it, it just keeps
adapting till it gets through. you will lose that game. What I do
instead is capture the initial kazaa and bittorrent traffic with snort,
then shun the outside servers for one hour. It doesn't stop kazaa or
bittorrent from working, but it does make the products work very, very
poorly. Over time, we have seen a significant drop in the amount of
traffic, and bittorrent traffic has dropped to nearly zero.
The reason you have to let the initial traffic burst out is because the
first protocol it tries is easy to monitor and dissect. the later,
adaptive traffic is harder to associate and dissect.
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- Re: Kazaa James_gmail-ij (Apr 01)
- Re: Kazaa trains (Apr 03)