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Date:      Sat, 18 Jul 1998 18:22:07 -0500 (CDT)
From:      Alex Nash <nash@mcs.net>
To:        andrew@squiz.co.nz
Cc:        maillist@oaks.com.au, freebsd-security@FreeBSD.ORG
Subject:   Re: rc.firewall (was Re: Large-scale scan of SNMP ports)
Message-ID:  <199807182322.SAA27596@nash.pr.mcs.net>
In-Reply-To: <Pine.BSF.3.96.980719082909.3806A-100000@aniwa.sky>

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On 19 Jul, Andrew McNaughton wrote:
> Can anyone explain this...  Took place within a second while I've been
> writing this, repeated 2 minutes later. yy.yy.yy.yy is a distant remote
> host
> 
> ipfw: 40000 Accept ICMP:8.0 yy.yy.yy.yy xx.xx.xx.xx in via de0
> ipfw: 40000 Accept ICMP:166.79 yy.yy.yy.yy xx.xx.xx.xx in via de0 Fragment = 69
> ipfw: 40010 Accept ICMP:0.0 xx.xx.xx.xx yy.yy.yy.yy out via de0
> 
> 
> Is the 79 in the middle line the port number of a fragmented packet? 

This is a bug, the ICMP type and subtype should not be displayed for
this fragmented packet (the information isn't present).

I'll commit a fix for this shortly.

Alex


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