Date: Thu, 30 Jul 1998 20:04:39 -0400 (EDT) From: wietse@porcupine.org (Wietse Venema) To: efb@cotdazr.org Cc: security@FreeBSD.ORG Subject: Re: PPP.3000.exposure Message-ID: <19980731000439.4580B7036A@spike.porcupine.org> In-Reply-To: <19980730213629.6026.qmail@cotdazr.org> from "efb@cotdazr.org" at "Jul 30, 98 09:36:29 pm"
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efb@cotdazr.org:
>
> Had a random sweep and the question came up .. what and why does my
> port 3000 show to the world outside for .. can I block it .. should I
> sweat it .. the F.Bsd_205 box is the router as well as main server ..
>
> Can I Wrap the 3000 at least so as not to kill iijppp and reduce my
> exposure and how ???
This is one feature of the ppp daemon that I didn't like at all.
To block, you'd need a kernel-based packet filter; or hack the
source and rip out the
if (server > 0) FD_SET(server, &rfds);
line. Beware, this is untested advice.
Wietse
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