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Date:      Sat, 4 May 2002 00:07:26 -0400
From:      "Joe & Fhe Barbish" <barbish@a1poweruser.com>
To:        "FBSDQ" <questions@FreeBSD.ORG>
Subject:   RE: Ping of death?
Message-ID:  <LPBBIGIAAKKEOEJOLEGOAEJCCPAA.barbish@a1poweruser.com>
In-Reply-To: <20020504025925.GB5805@icarus.slightlystrange.org>

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I believe this is a bug in 4.4 that gets fixed in 4.5.
In the last 2-3 weeks this was discussed on the questions list.
Check the archives for details.

-----Original Message-----
From: owner-freebsd-questions@FreeBSD.ORG
[mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Daniel Bye
Sent: Friday, May 03, 2002 10:59 PM
To: freebsd-questions@FreeBSD.ORG
Subject: Re: Ping of death?

On Fri, May 03, 2002 at 05:58:20PM -0500, Steven Lake wrote:
>       I've got one box that's got absolutely horrible access speed to
> the net but it's on a T1 line and no other machine is sharing the line.
> Telco has tested the line and sees nothing wrong but were unable to do a
> bandwidth or data test to see if it's just traffic or not.
>
>       The line should be pushing the full 1.544mbps, but I'm barely able
> to scrape 30k out of it.  Any machine that connects to it goes through the
> roof on the processor useage and dogs out.  So I'm suspect of a possible
> ping of death, but I wanted to rule out the local equipment first.  But
> since anything connecting to it to test this is gagged it's impossible to
> do any tests.
>
>       Does anyone have a way to monitor incoming traffic to find out if
> you're being hit with a dos attack or should I ring telco again and have
> them do a test on the T1 line to find the source?

Check out iplog in /usr/ports/net.  tcpdump *may* be useful too.

Dan

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