Date: Mon, 17 Apr 2000 17:14:25 -0700 (PDT) From: Archie Cobbs <archie@whistle.com> To: ru@FreeBSD.ORG (Ruslan Ermilov) Cc: julian@elischer.org (Julian Elischer), brian@Awfulhak.org (Brian Somers), cmott@scientech.com (Charles Mott), ari@suutari.iki.fi (Ari Suutari), perhaps@yes.no (Eivind Eklund), net@FreeBSD.ORG Subject: Re: Improved PPTP support for libalias(3) Message-ID: <200004180014.RAA28144@bubba.whistle.com> In-Reply-To: <20000417170542.A61926@relay.ucb.crimea.ua> from Ruslan Ermilov at "Apr 17, 2000 05:05:42 pm"
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Ruslan Ermilov writes: > > does this mean that only one PC at a time behind a NAT wall, can access a > > particular machine? > > i.e. two visitors with their own laptops from the same place, > > cannot go back to the same host to read their mail..? > > This is not a BAD restriction, but it is a restriction.. > > > If you mean two PCs, each with their own tunnel to the same host, this > will not work. The problem here is that we need some "tag" to use with > source and destination IP addresses, to successfully de-alias packets > coming in. For TCP and UDP packets, there are port numbers. For ICMP > echo/timestamp packets, there is an ID field. But unfortunately, there > seems to be no such "tag" with PPTP protocols. Sure there is: the Call ID. We are probably going to implement the remaining bit of this here at Whistle in the next couple of weeks.. and will submit when done. -Archie ___________________________________________________________________________ Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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