Date: Tue, 23 Sep 1997 23:48:04 +0100 From: Brian Somers <brian@awfulhak.org> To: Bruce Albrecht <bruce@zuhause.mn.org> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: sendmail and ppp -auto Message-ID: <199709232248.XAA07776@awfulhak.demon.co.uk> In-Reply-To: Your message of "Tue, 23 Sep 1997 09:00:02 CDT." <199709231400.JAA02114@zuhause.mn.org>
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> I just started using ppp -auto, and whenever sendmail starts up or I
> get any new mail, ppp connects to my ISP. How do I trace this? I
> don't know how. Is there something I should add to my sendmail
> configuration? For that matter, how do I attach bpf0 to tun0, and where
> is documentation on setting up ipfilters to reject the packet sendmail
> is sending? Would it help to set up a caching named?
There's a bit in the FAQ now (in the networking section - 10.7.9
currently).
Essentially, you need to "set log +tcp/ip", determine the rogue
program (sendmail in your case) and add a few lines to ppp.conf:
set dfilter 1 deny udp src eq 25
set dfilter 2 deny udp dst eq 25
set dfilter 3 permit 0/0 0/0
--
Brian <brian@Awfulhak.org>, <brian@FreeBSD.org>, <bri@OpenBSD.org>
<http://www.Awfulhak.org>;
Don't _EVER_ lose your sense of humour....
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