From mboxrd@z Thu Jan 1 00:00:00 1970 From: bert hubert Date: Mon, 25 Feb 2002 12:26:55 +0000 Subject: Re: [LARTC] Clamping tcp mss values to decrease latency Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lartc@vger.kernel.org On Mon, Feb 25, 2002 at 12:58:54PM +0100, Martin Devera wrote: > > > other tcp connections to have the normal full packet size. Enter > > > MSS-clamping. My pppoe client for linux can do mss clamping on every > > > packet that goes out and come in. Not enough control. There is an option > > > to do mss-clamping in iptables, however this only works in the forward > > > table. I can't match and control outgoing web connections, just > > > > Control and outgoing can be done with regular MTU settings. Just lower the > > MTU size of your ppp interface and the kernel will set a lower MSS > > automatically. > > Be VERY careful when doing it. There is too many websites blocking > MTU discovery protocol and you will be no longer able to reach them. > These system maintainers should be shot. :-\ > Setting max MSS in route is better way .. Not for locally generated packets - if you lower MTU, MSS will get set too. Regards, bert -- http://www.PowerDNS.com Versatile DNS Software & Services http://www.tk the dot in .tk http://lartc.org Linux Advanced Routing & Traffic Control HOWTO _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://ds9a.nl/lartc/