Date: Sat, 08 Jan 2000 09:42:39 +0100 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: "Rodney W. Grimes" <freebsd@gndrsh.dnsmgr.net> Cc: luigi@info.iet.unipi.it (Luigi Rizzo), patrick@mindstep.com (Patrick Bihan-Faou), logix@foobar.franken.de (Harold Gutch), freebsd-current@FreeBSD.ORG, nate@mt.sri.com (Nate Williams) Subject: Re: ipfw optimizations Message-ID: <13115.947320959@critter.freebsd.dk> In-Reply-To: Your message of "Sat, 08 Jan 2000 00:34:31 PST." <200001080834.AAA14383@gndrsh.dnsmgr.net>
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In message <200001080834.AAA14383@gndrsh.dnsmgr.net>, "Rodney W. Grimes" writes : >handle packets as they traverse ip_forward? I know Poul's or someone >elses drawing of the H style firewall could be implemented if we had >a way to apply rules as they traverse the ip_forward code and an easy >way to expand your scheme to include that would be to add something >like ``via fwd, in via fwd, out via fwd''. Note that I _think_ but >am not certain that NAT tapping/injection occurs in ip_forward so this >could be of benefit to those doing NAT. I think the general syntax would be if you could say "for one of my own IP#" that would be very powerful: add allow tcp from any to me 22 add deny tcp from any to not me 22 -- Poul-Henning Kamp FreeBSD coreteam member phk@FreeBSD.ORG "Real hackers run -current on their laptop." FreeBSD -- It will take a long time before progress goes too far! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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