> 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*).
Mmm-mmh. In my case, since ppp is started at boot time, the only user that
ever invokes it is root, hence the tcpmssd thingy is run as root. As
confirmed by the multiple "ps" I ran: euid == ruid == svguid == 0.
> 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
Yup, tried that, here's what I get:
******************** start ***************
Wed Nov 15 13:30:12 PST 2000
id says: uid=0(root) gid=0(wheel) groups=0(wheel)
HOME=/
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin
01001 divert 1234 tcp from any to any out xmit tun0 setup
The rule gets inserted, tcpmssd runs as root, and I feel like a dummy. Any
other ideas?
Thanks for the help Brian,
--Renaud
----- Original Message -----
From: Brian Somers <[EMAIL PROTECTED]>
To: Renaud Waldura <[EMAIL PROTECTED]>
Cc: Brian Somers <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>;
<[EMAIL PROTECTED]>
Sent: Wednesday, November 15, 2000 4:32 PM
Subject: Re: PPPoE w/ nat auto fragmentation hack? (use tcpmssd port)
> > 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 <[EMAIL PROTECTED]> <brian@[uk.]FreeBSD.org>
> <http://www.Awfulhak.org> <brian@[uk.]OpenBSD.org>
> Don't _EVER_ lose your sense of humour !
>
>
>
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