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Date:      Sun, 19 Sep 1999 18:40:33 -0700 (PDT)
From:      "Rodney W. Grimes" <rgrimes@gndrsh.dnsmgr.net>
To:        brian@sys.com.sg (Brian Tan)
Cc:        freebsd-ipfw@FreeBSD.ORG, bvi@rucus.ru.ac.za (Barry Irwin)
Subject:   Re: what is 'ICMP:3.13' ?
Message-ID:  <199909200140.SAA56860@gndrsh.dnsmgr.net>
In-Reply-To: <37E581BD.6529BEF1@sys.com.sg> from Brian Tan at "Sep 20, 1999 00:37:17 am"

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> Hi All,
> 
> Besides the ICMP:x:x messages, does anyone know what "Deny P:9" mean, as
> in
> 
> ipfw: 10900 Deny P:9 XXX.XXX.XXX.XXX 255.255.255.255 in via rl0

Yea... you have someone running some form of igp, it literally mans Protocol 9
as in what is listed in /etc/protocols:

igp     9       IGP             # any private interior gateway (Cisco: for IGRP)

Got any Ciscos around???

> Thanks
> Brian
> Barry Irwin wrote:
> > 
> > On Thu 1999-09-16 (19:30), AAKopeyko@rio.ru wrote:
> > > Hi All!
> > >
> > > Yesterday I add new rule
> > >
> > > ipfw add 802 allow log icmp from any to XXX.XXX.XXX.XXX
> > >
> > > and now have a lot of
> > >
> > > > ipfw: 802 Accept ICMP:3.13 XXX.XXX.XXX.XXX yyy.yyy.yyy.yyy in via tun0
> > >
> > > in log.
> > >
> > > Can anybody explain what 'ICMP type 3 code 13' message is? rfc 792, 950 never
> > > talk about it.
> > 
> > >From TCP/IP Illustrated volume I ( Stevens)
> > 
> > ICMP Type 3 code 13:
> > communication administritavely prohibited by filter
> > (Error stat)
> > 
> > In other words somwhere your traffic is being blocked by a server/router
> > which is being kind enough to tell you that this has been blocked by an
> > adminitritive rule, rather than  the service being unavalible etc.
> > 
> > Barry
> > --
> > --------------------------------------------------------------------------
> > Barry Irwin                                     IRC:  balin@zanet (#linux)
> > bvi@moria.org                                   http://rucus.ru.ac.za/~bvi
> > Whois BI414             - PMPN8EZ -             http://moria.org
> > --------------------------------------------------------------------------
> > 
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> 
> 
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> 


-- 
Rod Grimes - KD7CAX - (RWG25)                    rgrimes@gndrsh.dnsmgr.net


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