Re: Portsweep

[bahamin takhtaei <b_takhtaei@yahoo.com>]

Thanks for your attention,
but unfortunately psd match doesn't handle portsweep attacks.
It only handles portscan attacks; as you know in portscan an 
attacker scans many ports on a specific destination, but in 
portsweep attacker scans a few ports on many destinations.



--- On Tue, 9/23/08, Grant Taylor <gtaylor@riverviewtech.net> wrote:
From: Grant Taylor <gtaylor@riverviewtech.net>
Subject: Re: Portsweep
To: "Mail List - Netfilter" <netfilter@vger.kernel.org>
Date: Tuesday, September 23, 2008, 4:36 PM

On 09/23/08 01:51, bahamin takhtaei wrote:
> Do you know How to use iptables against Portsweep attacks?

There use to be a Port Scan Detection (psd) match extension that would 
help detecting this easier.  I.e. did it look like a system was 
initiating a port scan, and if so, handle it accordingly (drop / reject 
/ tar pit / etc.).  I don't know what the current state of the psd match 
is, so you will have to find out.



Grant. . . .
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