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RE: Interesting challenge
From: Daniel Staal <DStaal () usa net>
Date: Sat, 31 Jan 2004 12:41:46 -0500

--As off Friday, January 30, 2004 4:55 PM -0500, Sanjay K. Patel is alleged to have said:

 almost everyone who replied pointed towards icmp. We have tried
running the test with icmp disabled. We still do not get a reply on
those ports.

--As for the rest, it is mine.

One other option comes to mind: recent versions of OpenBSD can filter based on OS signature. I know that Nessus is one of the 'OS' choices. Could it be that the firewall is detecting your scanners and dropping them?

Daniel T. Staal

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