Date: Thu, 16 Jan 1997 00:31:28 +0000 From: Brian Somers <brian@awfulhak.demon.co.uk> To: "Daniel O'Callaghan" <danny@panda.hilink.com.au> Cc: Archie Cobbs <archie@whistle.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: FreeBSD as an ISDN Router Message-ID: <199701160031.AAA15181@awfulhak.demon.co.uk> In-Reply-To: Your message of "Wed, 15 Jan 1997 17:09:55 %2B1100." <Pine.BSF.3.91.970115170907.213i-100000@panda.hilink.com.au>
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[.....]
> And some might want to run alias stuff over ethernet or other, and not
> want ppp at all.
I agree completely - but the last time this was discussed (AFAIK) people
didn't really want to dirty the tcp stack.
The alias stuff converts *every* port number for a given interface, making
what appears to be going on and what's actually going on into two completely
different things.
I think the best way to do this sort of thing would be to take advantage of
something like a firewall'ing hook, and writing an alias lkm that massaged the
packets at that level. That way, unless you "modload lkm_alias.o" and then
condition a few interfaces, the tcp stack will be pure.
I don't know off the top of my head if this is possible at the moment - does
the firewalling code get a chance to change the packet ? Or is it just
capable of blocking it.
--
Brian <brian@awfulhak.demon.co.uk>, <brian@freebsd.org>
<http://www.awfulhak.demon.co.uk/>;
Don't _EVER_ lose your sense of humour....
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