full-disclosure - Re: Why the IPS product designers concentrate on server side protection? why they are missing client protection

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Date: Tue, 01 Jun 2010 08:34:22 -0400
From: Valdis.Kletnieks@...edu
To: rajendra prasad <rajendra.palnaty@...il.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Why the IPS product designers concentrate on
	server side protection? why they are missing client protection

On Tue, 01 Jun 2010 13:08:32 +0530, rajendra prasad said:

> Request length is less than the response length.So, processing small amount
> of data is better than of processing bulk data. Response may have encrypted
> data. Buffering all the client-server transactions and validating signatures
> on them is difficult.

All of that is total wanking.  The *real* reason why IPS product designers
concentrate on servers is because hopefully the server end is run by some
experienced people with a clue, and maybe even hardened to last more than
35 seconds when a hacker attacks.  Meanwhile, if anybody designed an IPS for
the client end, it would just get installed on an end-user PC running Windows,
where it will have all the issues and work just as well as any other
anti-malware software on an end-user PC.

Oh - and there's also the little detail that a site is more likely to buy
*one* software license to run on their web server (or whatever), rather than
the hassle of buying and administering 10,000 end-user licenses.  Especially
when an IPS on the client end doesn't actually tell you much about attacks
against the valuable target (the server) from machines you haven't installed
the end-user IPS on (like the entire rest of the Internet).

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