From: "Talpey, Thomas" Subject: Re: Portmap - was Re: Does mountd/statd really need to listen on a privileged port?? Date: Tue, 24 Apr 2007 11:15:57 -0400 Message-ID: References: <17958.48121.280256.493824@notabene.brown> <462CB496.6000308@RedHat.com> <17965.15503.703515.820793@notabene.brown> <200704240843.10681.olaf.kirch@oracle.com> <17965.45214.71167.310005@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: Javier@sc8-sf-spam2.sourceforge.net, Neil Brown , Steve Dickson , Matthias Koenig , nfs@lists.sourceforge.net, =?iso-8859-1?Q?_Pe=F1a?= , Olaf Kirch , anibal@debian.org To: Neil Brown Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list2-new.sourceforge.net with esmtp (Exim 4.43) id 1HgMoI-00065J-Np for nfs@lists.sourceforge.net; Tue, 24 Apr 2007 08:20:07 -0700 Received: from mx2.netapp.com ([216.240.18.37]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1HgMoL-0006XP-25 for nfs@lists.sourceforge.net; Tue, 24 Apr 2007 08:20:09 -0700 In-Reply-To: <17965.45214.71167.310005@notabene.brown> References: <17958.48121.280256.493824@notabene.brown> <462CB496.6000308@RedHat.com> <17965.15503.703515.820793@notabene.brown> <200704240843.10681.olaf.kirch@oracle.com> <17965.45214.71167.310005@notabene.brown> List-Id: "Discussion of NFS under Linux development, interoperability, and testing." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: nfs-bounces@lists.sourceforge.net Errors-To: nfs-bounces@lists.sourceforge.net At 03:24 AM 4/24/2007, Neil Brown wrote: > 2/ tcp sockets that linger in CLOSE_WAIT thus preventing other > sockets from binding to the same address. This prevents > privilege ports being used at a high rate. > Using UDP avoid this problem but is not always acceptable. > I wonder if we could make more use of SO_REUSEADDR in > bindresvport. This is risky - while it allows rapid rebinding to the ports, it also allows old duplicate packets in the network to arrive at the newly rebound port, potentially causing it to reset and/or produce unexpected statuses. I would not recommend this as a design requirement! Tom. ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs