From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phil Oester Subject: Re: [PATCH 1/1] netfilter: Ignore bogus SACK option values in TCP conntrack Date: Sun, 15 Sep 2013 09:22:52 -0700 Message-ID: <20130915162252.GA7020@linuxace.com> References: <1378148280-1153-1-git-send-email-kadlec@blackhole.kfki.hu> <1378148280-1153-2-git-send-email-kadlec@blackhole.kfki.hu> <20130902215736.GA11580@linuxace.com> <20130904165403.GA13703@linuxace.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netfilter-devel@vger.kernel.org, Pablo Neira Ayuso , Corey Hickey To: Jozsef Kadlecsik Return-path: Received: from mail-pb0-f46.google.com ([209.85.160.46]:35821 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752367Ab3IOQWp (ORCPT ); Sun, 15 Sep 2013 12:22:45 -0400 Received: by mail-pb0-f46.google.com with SMTP id rq2so3148020pbb.33 for ; Sun, 15 Sep 2013 09:22:45 -0700 (PDT) Content-Disposition: inline In-Reply-To: Sender: netfilter-devel-owner@vger.kernel.org List-ID: On Fri, Sep 13, 2013 at 10:16:14PM +0200, Jozsef Kadlecsik wrote: > I have been thinking on this from time to time and couldn't come up with a > solution which is satisfying: even if an nf_conntrack_tcp_sack_be_liberal > flag is added to the patch, if it's default off, then that's almost the > same situations as we have at the present. With the additional sysctl, at least the 0.1% of admins which are bit by these braindead anonymizer boxes would have the option of working around them without completely disabling TCP window tracking. Phil