Date: Sun, 04 Feb 2001 20:20:37 +0100 From: "Rogier R. Mulhuijzen" <drwilco@drwilco.nl> To: Julian Elischer <julian@elischer.org>, John Telford <j.telford@sympatico.ca> Cc: freebsd-net@FreeBSD.ORG, freebsd-questions@FreeBSD.ORG Subject: Re: Firewalling a PPPoE, any easy workaround to MTU on lan stations ? Message-ID: <4.3.2.7.0.20010204201824.00bd33c0@mail.bsdchicks.com> In-Reply-To: <3A7D9DE0.CE10C046@elischer.org> References: <000501c08ed2$2e1c5920$3227e540@johnny2k>
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At 10:22 4-2-01 -0800, Julian Elischer wrote:
>John Telford wrote:
> >
> > I'm putting a 4.2 R firewall in for a ppoe connection. (sympatico)
> > Is there any workaround I can use so I don't have to reduce the MTU on all
> > the internal stations ?
> > It's a mix of Windows 9x and Macs. And I've found only one utility capable
> > of adjusting MTU on Macs.
> > Can anything be done on the freebsd box as the traffic goes through it ?
> > Thanks in advance, John.
> > P.S. the pppoe setup went fine thanks to a page at www.sympaticousers.org
> > and some further notes at www.freebsddiary.org
>
>
>ppp now has an option where it will force the negotiated packet size
>of new tcp sessions going through it down. (i.e it fiddles with the packets)
>check the man page.. I THINK it may be in 4.2, if not it's in -Stable
Actually, I have just been playing with this. Userland ppp has the 'set
mtu' command which will make ppp try and set that MTU at negotiation time.
That's on a 4.2-STABLE box.
DocWilco
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