Date: Thu, 19 Mar 1998 16:40:05 -0800 (PST) From: Archie Cobbs <archie@whistle.com> To: eivind@yes.no (Eivind Eklund) Cc: jeff@netronix.com, freebsd-hackers@FreeBSD.ORG, grog@lemis.com Subject: Re: Natd Support for Microsoft PPTP / VPN using protocol 47 Message-ID: <199803200040.QAA06132@bubba.whistle.com> In-Reply-To: <19980319012952.45187@follo.net> from Eivind Eklund at "Mar 19, 98 01:29:52 am"
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Eivind Eklund writes: > On Wed, Mar 18, 1998 at 04:26:55PM +0000, Jeff Buseman wrote: > > Finally, my question(s) is this: Is there some way to make NATd do > > the translation on this protocol, or does it only handle TCP and UDP > > traffic? > > It only handle TCP and UDP traffic. The only way to get it to handle > something else is by asking Charles or me to make libalias do so, preferably > with pointer to suitable documentation. I might find time to handle this > fairly quickly if you come up with docs. This would be pretty easy. Proto 47 is GRE [1, 2] and is used by PPTP [3]. Each packet has a two byte "Call ID" parameter you could use to multiplex the translated packets. -Archie References: [1] http://www.es.net/pub/rfcs/rfc1701.txt [2] http://www.es.net/pub/rfcs/rfc1702.txt [3] ftp://ietf.org/internet-drafts/draft-ietf-pppext-pptp-02.txt ___________________________________________________________________________ Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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