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The Web Proxy filter in ISA Server 2006 logs requests that reference an incorrect access rule when you use overlapped HTTP protocolsArticle ID: 933716 - View products that this article applies to. SYMPTOMSWhen you use overlapped HTTP protocols in Microsoft
Internet Security and Acceleration (ISA) Server 2006, the Web Proxy
filter logs requests that reference an incorrect access rule. For example, the Web
Proxy filter logs requests that reference the default access rule instead of the access rule that is configured to enable HTTP protocols. Note When you use overlapped HTTP protocols in ISA Server 2006 Enterprise Edition, the requests that are logged may reference the Enterprise default rule. CAUSEThis problem occurs because the Web Proxy filter in ISA
Server 2006 incorrectly sets the logging field to the last rule that was
processed. Typically, this issue occurs when there are multiple definitions for the same
port. RESOLUTIONA hotfix is available for computers that are running ISA Server
2006. To resolve this problem, install the hotfix that is described in the
following Microsoft Knowledge Base article:
933718
(http://support.microsoft.com/kb/933718/
)
Description of the Internet Security and Acceleration Server 2006 hotfix package: March 21, 2007
STATUSMicrosoft
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section. MORE INFORMATIONWhen you must
prevent the Web Proxy filter from intercepting Web traffic, you can use overlapped HTTP protocols. This
configuration may be required when non-standard HTTP traffic uses TCP port 80.
If you use the standard HTTP protocol, Web traffic that does not comply with
the relevant Request for Comments (RFC) standard will be denied.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
917051
(http://support.microsoft.com/kb/917051/
)
The
Web Proxy filter in ISA Server 2004 may log requests with an incorrect access
rule when you use overlapped HTTP protocols
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