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RE: Nessus Scan
From: "Erin Carroll" <amoeba () amoebazone com>
Date: Wed, 15 Aug 2007 15:16:27 -0700

This is incorrect.

Remember, PCI external quarterly scanning for compliance is required in 11.2
of the PCI guidelines to ascertain the effectivess and PASS/FAIL status of
your security controls around customer CC data and PII. This includes the
IPS/IDS/FW systems. Disabling IPS/IDS or other tools would almost guarantee
a FAIL status report. You might as well turn off your firewalls too while
you're at it. If your Approved Security Vendor is requiring that you do turn
off IPS etc I would strongly suggest finding another ASV.

Erin Carroll
SecurityFocus pen-test list
"Do Not Taunt Happy-Fun Ball" 

-----Original Message-----
From: listbounce () securityfocus com 
[mailto:listbounce () securityfocus com] On Behalf Of Craig Wright
Sent: Wednesday, August 15, 2007 12:48 PM
To: mikef () everfast com
Cc: security-basics () securityfocus com
Subject: RE: Nessus Scan

Why is the port open ?
Remember that you have to disable all IPS and such tools 
before the scan for the scan vendor.

Craig Wright
Manager of Information Systems

Direct : +61 2 9286 5497
Craig.Wright () bdo com au
+61 417 683 914

BDO Kendalls (NSW)
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From: listbounce () securityfocus com on behalf of mikef () everfast com
Sent: Thu 16/08/2007 12:31 AM
To: security-basics () securityfocus com
Subject: Nessus Scan

After a recent external PCI Compliant scan one of my web 
servers failed because the scanner determine that  "a port 
was open at the beginning of the scan, and is now closed...". 
 I've tried all sorts of things to get this corrected the 
results remain. I talked with our scanning vendor they don't 
seem to have answer as to how to correct the problem. When I 
do a Nessus Scan on the site, Nessus reports the issue as a 
security note and risk factor of '0', however the my PCI 
scanning vendor reports the problem as a risk factor of 4 
thus causing the server to fail the scan and resulting a 
non-compliance report.

I haven't been able to find anything on how to address this 
issue. Where should i look to resolve this problem

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