From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Wagner Subject: Re: [PATCH nf-next] netfilter: xtables: lightweight process control group matching Date: Tue, 22 Oct 2013 08:45:32 +0100 Message-ID: <52662D1C.2020104@monom.org> References: <1380910855-12325-1-git-send-email-dborkman@redhat.com> <87li1qp3l8.fsf@xmission.com> <526231E0.6060903@redhat.com> <526543A2.2040901@monom.org> <52654CE6.7030706@redhat.com> <91E2D863603AD4478F101CE81E76E45D01828D59@SHSMSX103.ccr.corp.intel.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <91E2D863603AD4478F101CE81E76E45D01828D59@SHSMSX103.ccr.corp.intel.com> Sender: netdev-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: "Ni, Xun" , Daniel Borkmann Cc: "Eric W. Biederman" , "pablo@netfilter.org" , "netfilter-devel@vger.kernel.org" , "netdev@vger.kernel.org" , Tejun Heo , "cgroups@vger.kernel.org" Hi Xun, On 10/22/2013 08:15 AM, Ni, Xun wrote: > Hello, Daniel: > can all your examples block early before doing network operations? I was referring to Linux Security Module which allows to define access policies for an application e.g. which ports are allowed to be used. If the goal is just to block those ports you don't have to go through half of the networking stack to figure out via an iptable rules that this access is not allowed. > What's the whole netfilter universe? Can you give us more clear > examples? I am not sure if I understood your question correctly. In case you are asking what netfilter is I would like pointing you to the http://www.netfilter.org/ project page. cheers, daniel