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Date:      Wed, 31 May 2000 17:15:59 -0700
From:      Dragos Ruiu <dr@dursec.com>
To:        Roelof Osinga <roelof@nisser.com>, The Hermit Hacker <scrappy@hub.org>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: tracerouting switches, routers and hosts ...
Message-ID:  <0005311717574I.15569@kyxbot.zorg>
In-Reply-To: <39358740.AF0FEB9B@nisser.com>
References:  <Pine.BSF.4.21.0005311437320.474-100000@thelab.hub.org> <39358740.AF0FEB9B@nisser.com>

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On Wed, 31 May 2000, Roelof Osinga wrote:
> The Hermit Hacker wrote:
> > myhost->switcha->porta-router->portb-router->switchb->remote host
> >         I only see the IPs for porta-router and remote host, but it misses
> > everything in between ...
> 
> They're probably ignoring ICMP requests. Operating in stealth mode
> so to speak.
> 
Traceroute works by modifying the Time To Live (TTL) field.
Switches typically wouldn't affect the TTL or show up in
traceroutes as anything other than latency.

cheers,
--dr

-- 
dursec.com ltd. / kyx.net - we're from the future    http://www.dursec.com


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