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Date:      Tue, 22 Aug 2000 09:44:00 +0400 (MSD)
From:      Jaroshenko Serge <jaroshenko@mail.ru>
To:        noor@comrax.com
Cc:        freebsd-stable@FreeBSD.ORG
Subject:   Re: DoS attacks and FreeBSD.
Message-ID:  <Pine.BSF.4.21.0008220943260.4903-100000@freebsd.merlin.ru>
In-Reply-To: <Pine.BSF.4.10.10008220241010.11868-100000@dns.comrax.com>

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Hi!

You can see /usr/ports/security/portsentry .

Serge

On Tue, 22 Aug 2000 noor@comrax.com wrote:

> Hello all,
> 
> One of our sites was a target for a DoS attempt tonight. The attempt
> failed.
> 
> I have ipfw running on the server, and managed to block the IP's in
> question in time. My question is: suppose I was not near the PC at the
> time of the incident, how can I configure ipfw to automatically block
> cnnections originating from any IP and that is continuous in a suspecious
> manner? (let's say 50 concurrent connections to port 80 every second.)
> 
> Is this possible in FreeBSD or/and in ipfw? Would like to know how...
> 
> Thanks in advance.
> 
> Noor
> 
> 
> 
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> 



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