From mboxrd@z Thu Jan 1 00:00:00 1970 From: richard hauswald Subject: Re: iptables bug using dhcpd3 on debian sarge 2.6.8 Date: Thu, 10 Mar 2005 09:10:25 +0100 Message-ID: <423000F1.2040802@rhcs.de> References: <6642317$1110205335422c6397f21926.15822394@config8.schlund.de> <422DC8B7.6060801@trash.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: netfilter-devel@lists.netfilter.org In-Reply-To: <422DC8B7.6060801@trash.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: netfilter-devel-bounces@lists.netfilter.org Errors-To: netfilter-devel-bounces@lists.netfilter.org List-Id: netfilter-devel.vger.kernel.org Patrick McHardy wrote: > > ISC DHCP uses AF_PACKET sockets on Linux by default, which receive > packets before iptables. There are some compile-time options to make it > use normal UDP sockets. > > Regards > Patrick > Thanks for that tip. But is this good or bad? I mean if i where a trojan programmer, couldn't i use these AF_PACKET sockets to code an iptables passing trojan? I'm not good programming networkstuff, so excuse my simple question. Regards Richard Hauswald