HOW TO: Filter Cache Entries in ISA Server 2000

This article describes how to filter Internet Security and Acceleration (ISA) Server cache entries. You can filter content that is saved to the Web Proxy cache. The default ISA Server Web cache configuration allows all content, except for HTTPS content, to be stored in the Web cache. You may want content from certain sites to be excluded from the cache. You use Web Routing rules to filter the content in the Web cache. To filter content in the Cache, use the steps in both of the following sections.

Creating the Destination Set

1.	Start the ISA Management console. Expand the server or array name, and then expand the Policy Elements node.
2.	Right-click the Destination Sets node, point to New, and then click Set.
3.	In the Name box, type the name of the destination set. In the Description box, type a short description of the destination set.
4.	Click Add. Click Destination, and type the fully qualified domain name (FQDN) of the site that you want to filter. Type a path in the Path box if you want to filter only a specific folder at the site.
5.	Click OK.
6.	Click OK.

Creating the Web Routing Rule

1.	Start the ISA Management console. Expand the server or array name, and then expand the Network Configuration node.
2.	Right-click the Routing node, point to New, and then click Rule.
3.	Type a name for the Routing rule, and then click Next.
4.	In the Apply this rule to box, click Specified Destination Set.
5.	In the Name box, click the destination set you created for your Web Cache filter. Click Next.
6.	Click the appropriate request action. This will differ depending on your ISA Server environment. Select the Use a dial-up entry check box if you use a dial-up interface for the external interface on the ISA Server. Click Next.
7.	Click A valid version of the object; if none exists, retrieve the request using the specified requested action. Click Next.
8.	Click No content will ever be cached. Click Next.
9.	Review your settings, and then click Finish.