When creating custom filtering lists of URLs that are expected to grow large, it can be difficult to manage them.
Also, creating such lists in the Visual Policy Manager (VPM) with a combined object can add a performance hit.
Instead, use a policy-based category to contain the list of URLs to filter on. This will reduce the performance hit and make it easier to manage.
For example, to create a custom category:
1. In a Web Access Layer, set the Destination, and Add Request URL Category
2. Under Categories select Policy click the Add button and name the new category
3. Select the new category and Edit the URLs, and add the URLs one per line as instructed below and select OK
4. Check off the new category to apply it to the rule and hit OK and OK