A new demo has been added in the Microsoft ISA Server demo portion.The detail of this demo is
Title: How to Create a Content Group in ISA Server 2000
Objective: The objective of this demo is to teach you how to create a content group in ISA Server 2000. Content groups specify Multipurpose Internet Mail Extensions (MIME) types and file name extensions. When you create a site and content rule or a bandwidth rule, you can limit the rule application to specific content groups. This allows you to be more specific when you configure security policy, as you can limit access not only to a particular destination, but also to specific content. Content groups apply only to HTTP and tunneled FTP traffic, which passes through the Web Proxy service. Content groups do not apply to HTTPS content.
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