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Content Filtering with ISA Server May Return HTTP Error 502 on Some Web Sites

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This article was previously published under Q317798

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Symptoms

If you use a Site and Content rule to allow access to only selected content groups, Web Proxy clients may receive HTTP error 502 with a status of "12202" when users browse some Web sites. This behavior may occur even if all of the available content groups are selected in the Site and Content rule.

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Cause

This behavior occurs if the Web server does not properly implement Request for Comments (RFC) 2616 for HTTP 302 redirections. The Web server returns an HTTP 302 redirection with no body and no content type. The redirection is rejected because Internet Security and Acceleration (ISA) Server is allowing only selected content types.

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Keywords: KB317798, kbprb, kberrmsg

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Article Info
Article ID : 317798
Revision : 4
Created on : 10/31/2006
Published on : 10/31/2006
Exists online : False
Views : 277