From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: Suppress / delay SYN-ACK Date: Fri, 13 Oct 2006 06:11:16 +0200 Message-ID: <452F11E4.8050508@cosmosbay.com> References: <000101c6edd5$a880d430$1a04010a@V505CP> <452E69B2.4030306@hp.com> <469958e00610121458h45581840ke0367647a735c635@mail.gmail.com> <452EC7B9.2030801@hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Caitlin Bestler , Martin Schiller , netdev@vger.kernel.org Return-path: Received: from sp604003mt.neufgp.fr ([84.96.92.56]:16515 "EHLO smTp.neuf.fr") by vger.kernel.org with ESMTP id S1751615AbWJMELm (ORCPT ); Fri, 13 Oct 2006 00:11:42 -0400 Received: from [192.168.30.203] ([88.137.140.131]) by sp604003mt.gpm.neuf.ld (Sun Java System Messaging Server 6.2-5.05 (built Feb 16 2006)) with ESMTP id <0J7200MIS3MNKHR0@sp604003mt.gpm.neuf.ld> for netdev@vger.kernel.org; Fri, 13 Oct 2006 06:11:12 +0200 (CEST) In-reply-to: <452EC7B9.2030801@hp.com> To: Rick Jones Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Rick Jones a =E9crit : >> More to the point, on what basis would the application be rejecting = a >> connection request based solely on the SYN? >=20 > True, it isn't like there would suddenly be any call user data as in=20 > XTI/TLI. DATA payload could be included in the SYN packet. TCP specs allow this = AFAIK. About iptables rules added on the fly by an application that want to pr= otect=20 its listen queue from random sources of 'blacklisted' peers, this has t= he=20 limitation of granting sufficient rights to the user running the applic= ation. Eric