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Date:      Tue, 3 Nov 1998 12:00:24 +1300
From:      "Dan Langille" <junkmale@xtra.co.nz>
To:        Darren Reed <avalon@coombs.anu.edu.au>
Cc:        freebsd-security@FreeBSD.ORG
Subject:   Re: IPFW problems...
Message-ID:  <199811022300.MAA19467@cyclops.xtra.co.nz>
In-Reply-To: <199811011102.AAA03077@predator.xtra.co.nz>
References:  <199810291803.HAA15509@witch.xtra.co.nz> from "Dan Langille" at Oct 30, 98 07:03:17 am

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On 1 Nov 98, at 22:02, Darren Reed wrote:

> In some mail from Dan Langille, sie said:
> > 
> > On 29 Oct 98, at 21:45, Darren Reed wrote:
> > 
> > > traceroute/UDP was fixed on the weekend last, the pc (ICMP) version
> > > may not yet work.
> > 
> > OK.  Good!  Can you guess when the other version will work?
> 
> My testing shows "traceroute -I" to work properly with NAT.

I'm not sure what "traceroute -I" does.  I see no such option on 
traceroute for FreeBSD 2.2.7.

As for my traceroute problems, my mind is unclear.  I admit that I didn't 
take full notes.  As such, I supply the following in the hopes that it may 
trigger something when you read it.  If it does not, then I will reinstall 
IP Filter and get the full story.

I'm using IP Filter 3.2.9 under FreeBSD 2.2.7 RELEASE.

I believe I was able to traceroute when using NAT and without any deny 
rules.  When I tried to add in the example firewall rules (from 
rules/BASIC_2.FW), I found that disabling the following rule allowed 
traceroute to work:

block in log quick all with short

When this rule was present, traceroute did not work at all.

--
Dan Langille
The FreeBSD Diary
http://www.FreeBSDDiary.com/freebsd

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