To configure content types for an access rule

1. In the console tree of ISA Server Management:
2. • For ISA Server 2006 Enterprise Edition, for a specific enterprise policy, expand Microsoft Internet Security and Acceleration Server 2006, expand Enterprise, expand Enterprise Policies, and then click Enterprise_Policy.
   • For ISA Server 2006 Enterprise Edition, for array-level firewall policy, expand Microsoft Internet Security and Acceleration Server 2006, expand Arrays, expand Array_Name, and then click Firewall Policy.
   • For ISA Server 2006 Standard Edition, expand Microsoft Internet Security and Acceleration Server 2006, expand Server_Name, and then click Firewall Policy.
3. In the details pane, click the applicable access rule.
4. On the Tasks tab, click Edit Selected Rule.
5. On the Content Types tab, do one of the following:
   • To specify that the rule applies to all content, click All content types.
   • To specify that the rule only applies to certain content, click Selected content types, and then click one or more content groups.

Note

• To open ISA Server Management, click Start, point to All Programs, point to Microsoft ISA Server, and then click ISA Server Management.

Important

• If you specify the Selected content types option, the rule will be applied only to HTTP traffic.
• When you select All content types, the rule applies to all content, regardless of whether there is a defined content type.
• The content type is not always present in the URL or response header. For this reason, configuring an access rule using content types may result in unforeseen behavior of your firewall policy.
• After you click Apply in the details pane, the policy is updated. The new policy applies only to new connections.
• Microsoft Internet Security and Acceleration (ISA) Server 2006 takes the following actions to determine content type:
• 1. ISA Server receives the Web server response and checks whether it includes the content-type header.
  2. If the content-type header is in the response, ISA Server compares the header value to the content type policy settings.
  3. If the response does not contain the content-type header, ISA Server compares the extension of the requested URL to the content type policy.
  4. If the URL does not contain an extension, ISA Server concludes that there is no match between the content type and the rule.

Related Topics

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