From mboxrd@z Thu Jan 1 00:00:00 1970 From: "James Mello" Subject: RE: Question Date: Fri, 21 Jun 2002 16:16:45 -0700 Sender: netfilter-admin@lists.samba.org Message-ID: <001c01c21979$b6b61a40$8147370a@washingtghv9lt> References: <20020621231230.XKAD19225.mta07-svc.ntlworld.com@there> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20020621231230.XKAD19225.mta07-svc.ntlworld.com@there> Errors-To: netfilter-admin@lists.samba.org List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: 'Antony Stone' , netfilter@lists.samba.org > > No, but there are experimental modules that will allow you > to enforce > > your own rules. I've heard of some IDS or attack detection > > capabilities being done through IP tables. > > What sort of modules ? I *hope* you don't mean the 'string' match ? Yeah, I actually do mean the 'string' match :) I've got some friends who used this to do some filtering on content on their own internet exposed boxes to prevent stupid Nimda worm and other attacks from being perpetrated. They *did* say it was slow, but overall it's been a pretty effective solution for them. Note I *never* did say that you can do all sorts of Layer 7 evaluation (or validation) like the guy said. I just suggested this as an option to do some layer 7 filtering and content checking... -- Cheers -- James