Date: Tue, 19 Jun 2001 11:41:42 +0200 From: "Karsten W. Rohrbach" <karsten@rohrbach.de> To: Chris Kesler <chris@pconline.com> Cc: freebsd-security@FreeBSD.ORG Subject: Re: ipnat.conf oddity Message-ID: <20010619114142.C30037@mail.webmonster.de> In-Reply-To: <Pine.LNX.3.95.1010618132448.5151M-100000@newton.pconline.com>; from chris@pconline.com on Mon, Jun 18, 2001 at 01:34:13PM -0500 References: <Pine.LNX.3.95.1010618132448.5151M-100000@newton.pconline.com>
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--kVXhAStRUZ/+rrGn Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Chris Kesler(chris@pconline.com)@2001.06.18 13:34:13 +0000: > This is my current ipnat.conf file. >=20 > map vx0 192.168.1.0/24 -> 0/32 portmap tcp/udp 1025:65000 > map vx0 192.168.1.0/24 -> 0/32 >=20 > Notice that the address to the right of the -> is 0. I discovered by > accident that this configuration works on my system. I'm using ipnat and > ipf on 4.3-RELEASE. >=20 > I couldn't find any docs describing why this config works. I have a cable > modem connection, and the DHCP-assigned IP address changes once in a > while. I wonder if this is a feature intended to allow me to continue to > forward packets after my address changes. Or is it a bad idea to run the > box this way? i think it's exactly what you are looking for with a dialup connection. 0/0 expands to "world", the whole net, and 0/32 expands to the interface ip that might get configured dynamically, so this is probably what you want, since your ip address can change when your lease expires in dhcp. /k --=20 > Large cats can be dangerous, but a little pussy never hurt anyone. KR433/KR11-RIPE -- WebMonster Community Founder -- nGENn GmbH Senior Techie http://www.webmonster.de/ -- ftp://ftp.webmonster.de/ -- http://www.ngenn.n= et/ karsten&rohrbach.de -- alpha&ngenn.net -- alpha&scene.org -- catch@spam.de GnuPG 0x2964BF46 2001-03-15 42F9 9FFF 50D4 2F38 DBEE DF22 3340 4F4E 2964 B= F46 --kVXhAStRUZ/+rrGn Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE7Lx5WM0BPTilkv0YRArnYAKCtwfOwOvwESNyVJSO+IekiyKhiSACdE+AF xrBMieq7/UWDHwoVzN/a1vg= =pM6Q -----END PGP SIGNATURE----- --kVXhAStRUZ/+rrGn-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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