There is a known bug that causes certain (all?) 
SonicWalls to false positive on FIN scans. It has to do with 
http keep-alives I believe. I've learned to just ignore
"probable FIN scans" against port 80. Pretty lame
but there it is.

Jim Grossl
Systems Admin
Lee Pesky Learning Center
Boise, Idaho USA 

-----Original Message-----
From: David McRell [mailto:[EMAIL PROTECTED]]
Sent: Thursday, July 25, 2002 1:16 PM
To: SonicWall List
Subject: Re: [SonicWALL]- TCP FIN Scan


On that note,

I keep getting 'Probable TCP Fin scan' from PORT 80 to high ports on my
public NAT IP.

Does anyone else experience this pattern?


On 7/22/02 7:20 AM, "Eric Johnson" <[EMAIL PROTECTED]> wrote:

> When my users check their e-mail I get a warning from the sonic wall (pro
> 100) saying a possible fin scan was detected.  The mail server is iMail
> 6.05.  Is there something that I am doing wrong or is this just odd
> interaction between the sonic wall and iMail?

-- 
David McRell, CTO, Danetracks, Inc.
7356 Santa Monica Blvd.
West Hollywood, CA 90046
Tel 323-512-8160  Fax 323-512-8163


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