Re: Explicit Deny does not work, why?

From: "Jim Harrison" <jim@xxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Date: Thu, 14 Mar 2002 06:10:00 -0800

That's really a waste of your time.
If those requests are making it to your web server behind ISA, then you need
to reexamine your publishing technique.
Code Red and Nimda requests can only get to your web server if:
1. you use server publishing for web sites
2. your web-published sites use an "all requests" destination in the rule
Trying to deny those requests in the face of one (or both) of the above
conditions is fruitless.

Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/authors/harrison/
Read the books!
----- Original Message -----
From: "Greg Foulks" <greg.foulks@xxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Wednesday, March 13, 2002 8:57 AM
Subject: [isalist] Explicit Deny does not work, why?


http://www.ISAserver.org


I've created a series of deny paths (incoming and outgoing) to block any
code red attempts from coming into and out of our ISA
server.

Please see the attached files

1) Snap shot of the ISA server Destination Set and Content Rules.
http://www.nfti.com/screen_shot.htm

2) Below A snap shot of our logs showing the requests are still being
passed.

Can anyone help to explain why the requests are still being allowed through?

Thanks,

Greg Foulks, MCP
NewFound Technologies, Inc.
http://www.nfti.com
Email: greg.foulks@xxxxxxxx
Voice: 614.318.5036
Fax: 614.318.5005



Server (500 Series) Errors Detail
Error Code, Timestamp and URL Occurrences % of 5xx Errors
  50003/10/2002 05:09:53/scripts/..\../winnt/system32/cmd.exe?/c+dir 1
10.00%
  50003/10/2002 05:09:54/scripts/..\../winnt/system32/cmd.exe?/c+dir 3
30.00%
  50003/10/2002 05:09:54/scripts/../../winnt/system32/cmd.exe?/c+dir 1
10.00%
  50003/10/2002 09:50:31/scripts/..\../winnt/system32/cmd.exe?/c+dir 1
10.00%
  50003/10/2002 09:50:34/scripts/../../winnt/system32/cmd.exe?/c+dir 1
10.00%
  50003/10/2002 09:50:34/scripts/..\../winnt/system32/cmd.exe?/c+dir 3
30.00%
Total for Errors Above 10 100.00%

Greg Foulks, MCP
NewFound Technologies, Inc.
http://www.nfti.com
Email: greg.foulks@xxxxxxxx
Voice: 614.318.5036
Fax: 614.318.5005


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Re: Explicit Deny does not work, why?

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