Date: Thu, 16 Nov 2000 00:32:54 +0000 From: Brian Somers <brian@Awfulhak.org> To: "Renaud Waldura" <renaud@waldura.com> Cc: "Brian Somers" <brian@Awfulhak.org>, hackers@FreeBSD.ORG, brian@Awfulhak.org Subject: Re: PPPoE w/ nat auto fragmentation hack? (use tcpmssd port) Message-ID: <200011160032.eAG0Ws526758@hak.lan.Awfulhak.org> In-Reply-To: Message from "Renaud Waldura" <renaud@waldura.com> of "Wed, 15 Nov 2000 13:48:49 PST." <000701c04f4d$d6e9da60$0402010a@biohz.net>
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> Maybe I'm just being boneheaded, but...
>
> > ! sudo ipfw add 40000 divert 12345 all from any to any via INTERFACE
> > ! sudo /usr/local/bin/tcpmssd -p 12345 -i INTERFACE
>
> I was under the (tested & confirmed) impression that programs executed by
> ppp are run under uid 0. Eg. I don't use "sudo" but the ipfw rule is added
> anyway, and tcpmssd is run as root.
>
> But maybe a sudo environment brings something else? That could explain a lot
> right there.
>
> --Renaud
ppp will run programs as the user id that invoked ppp rather than
using the effective user id (ie, it runs things as *you*, not *root*).
AFAIK, sudo will not muck about with your environment....
A good ``first step'' is to run
! sh -c "/usr/local/bin/tcpmssd -p 12345 -i INTERFACE >/tmp/log 2>&1"
so that you can get to see any error messages - ppp redirects I/O to
/dev/null by default.
--
Brian <brian@Awfulhak.org> <brian@[uk.]FreeBSD.org>
<http://www.Awfulhak.org>; <brian@[uk.]OpenBSD.org>
Don't _EVER_ lose your sense of humour !
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