Date: Mon, 3 Jul 2000 10:50:40 +0300 From: Ruslan Ermilov <ru@sunbay.com> To: Karsten Patzwaldt <karsten@gedankenpolizei.de> Cc: net@FreeBSD.org Subject: Re: NAT and PPPoE Message-ID: <20000703105040.C73016@sunbay.com> In-Reply-To: <051c01bfe4ba$466aaf30$040aa8c0@local.mindstep.com>; from patrick@mindstep.com on Mon, Jul 03, 2000 at 02:45:28AM -0400 References: <20000702233552.A862@odysseus.gedankenpolizei.de> <051c01bfe4ba$466aaf30$040aa8c0@local.mindstep.com>
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On Mon, Jul 03, 2000 at 02:45:28AM -0400, Patrick Bihan-Faou wrote: > Hi, > > > OK, I finally got a DSL connection, and I set up a FreeBSD-router as a > > router, using NAT to give access to the Internet for my whole network. > > That works so far, I can connect via SSH, POP3 and so on. But FTP and > > HTTP make problems. Those two protocols can be used from the router > > without any problems, but the other computers on the LAN time out when > > trying to connect to any server. They _are_ able to connect to to the > > webservers of my provider (the german T-Online), but I don't reach any > > other servers. > > This sounds very much like the problem many people are having with PPPoE > setups and Path MTU Discovery not functioning properly on remote web > servers. > > The only thing you can do is reduce the configure MTU on the CLIENT machines > on the LAN to something like 1400 bytes. > > Also, this problem has been discussed on this list quite extensively a > couple of weeks ago. There is a small daemon to run on your FreeBSD gateway > that will go around the problem. > > Look for threads called '"frag-anyways" knob' and '[CFV] where to put the > TCP MSS correction code'. The daemon is called "tcpmssd" and works like > natd. > ... and is available from http://people.FreeBSD.org/~ru/tcpmssd.tgz -- Ruslan Ermilov Oracle Developer/DBA, ru@sunbay.com Sunbay Software AG, ru@FreeBSD.org FreeBSD committer, +380.652.512.251 Simferopol, Ukraine http://www.FreeBSD.org The Power To Serve http://www.oracle.com Enabling The Information Age To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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