From owner-freebsd-net@FreeBSD.ORG Fri Oct 19 16:49:52 2007 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EC3D316A46D for ; Fri, 19 Oct 2007 16:49:52 +0000 (UTC) (envelope-from max@love2party.net) Received: from moutng.kundenserver.de (moutng.kundenserver.de [212.227.126.177]) by mx1.freebsd.org (Postfix) with ESMTP id 7D77613C4C3 for ; Fri, 19 Oct 2007 16:49:52 +0000 (UTC) (envelope-from max@love2party.net) Received: from amd64.laiers.local (dslb-088-066-029-194.pools.arcor-ip.net [88.66.29.194]) by mrelayeu.kundenserver.de (node=mrelayeu6) with ESMTP (Nemesis) id 0ML29c-1Iiv2h3LVQ-0006dh; Fri, 19 Oct 2007 18:49:48 +0200 From: Max Laier Organization: FreeBSD To: freebsd-net@freebsd.org Date: Fri, 19 Oct 2007 18:49:40 +0200 User-Agent: KMail/1.9.7 References: <6C9CF4C3635197B3CBED0D78@ganymede.hub.org> In-Reply-To: <6C9CF4C3635197B3CBED0D78@ganymede.hub.org> X-Face: ,,8R(x[kmU]tKN@>gtH1yQE4aslGdu+2]; R]*pL,U>^H?)gW@49@wdJ`H<=?utf-8?q?=25=7D*=5FBD=0A=09U=5For=3D=5CmOZf764=26nYj=3DJYbR1PW0ud?=>|!~,,CPC.1-D$FG@0h3#'5"k{V]a~.<=?utf-8?q?mZ=7D44=23Se=7Em=0A=09Fe=7E=5C=5DX5B=5D=5Fxj?=(ykz9QKMw_l0C2AQ]}Ym8)fU MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart10564751.1cM7D7juYb"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200710191849.46335.max@love2party.net> X-Provags-ID: V01U2FsdGVkX18BQRtHRq1RzzstKUIOHoG1kjyriFl4su8C3hl Z9IxxCUytO5uq+DLLGmr+f+JgkiQ2s1e5RbxG2wTndt55oUr0n xnCY5n2r9R3zK6HBWKWUT5OL4vWdXOzb2n0ZBo61r4= Cc: "Marc G. Fournier" Subject: Re: IPv6 <-> NAT <-> IPv4 ... possible? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Oct 2007 16:49:53 -0000 --nextPart10564751.1cM7D7juYb Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Friday 19 October 2007, Marc G. Fournier wrote: > Could I hide an IPv6 network behind NAT? I don't know if that is even > possible ... the IPv6 IPs would be private (equiv to 192.168.x.x) ... > basically, none of the hosts behind NAT need a public IP, *but* I may > end up with more then 256 hosts, so was wondering if using IPv6 behind > the NAT would be 'simplier' ... > > If possible, pointers to docs to read would be appreciated ... Possible - yes. Practical - no. There are a couple of techniques=20 available that can provide the functionality you are looking for. All of=20 them solve a subsection of the problem, but there is no - to my=20 knowledge - complete sollution. The three main technologies are: 1) TRT (implemented through faith(4) / faithd(8)) 2) Header translation (I don't know if we have this implemented anywhere) 3) (Transparent) application proxies - there are patches for squid - IIRC =46or 1 and 3 you have to run a AAAA to A translating DNS server. 2 is the= =20 most "transparent" one, but I don't know if there is an implementation=20 available. All in all, it's a PITA. Much, much worse than NAT. For the moment - if=20 you want your clients to do more than just surf webpages - you want NAT. =20 If it's only about surfing WWW you could try a (transparent) web proxy on=20 your dual stack router, but don't expect to find a lot of documentation! =2D-=20 /"\ Best regards, | mlaier@freebsd.org \ / Max Laier | ICQ #67774661 X http://pf4freebsd.love2party.net/ | mlaier@EFnet / \ ASCII Ribbon Campaign | Against HTML Mail and News --nextPart10564751.1cM7D7juYb Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQBHGOAqXyyEoT62BG0RAkKcAJ0exvp2F6+PfF6Akm95hDYxisn4sACePvEC 6O0xcqTOTXPrib0938uW2EI= =3aEk -----END PGP SIGNATURE----- --nextPart10564751.1cM7D7juYb--