Web Filtering

About this task

A Web filter policy is a means of managing the number of records and time cached URLs are retained. When configured and applied, the policy also determines whether to filter access to a cached URL when a categorization server is unreachable or is unable to classify request types. To review existing Web filter policies and assess whether new ones require creation, modification or deletion:

Procedure

Select Configuration → Network → Web Filtering.
Select Add to create a new Web filter policy, or select an existing policy and Edit to modify its attributes. Obsolete policies can be selected and Deleted as needed.
If creating a new Web Filtering Policy, assign it a Name up to 32 characters to distinguish this policy from others with similar attributes. Modify the new Web Filtering Policy parameters and click OK to save the policy, Reset to revert back to default settings or Exit to exit without creating a new Web Filtering Policy.

Set the following Web Filtering Policy settings:


Maximum Cached Records	Set the maximum number of records (from 0 - 4,000,000) for Web content cached locally on this controller or service platform. The default setting is 100,000 records.
Time Validity for Cached URL	Set the maximum amount of a time, from 0 - 86,400 seconds, a URL is valid in the controller or service platform cache. Consider the bandwidth depletion if caching a large number of records over the maximum permissible time validity.
Access to Unreachable Server	Either pass or block (filter) access to a cached URL when the categorization server is unreachable. Access is allowed by default.
Access to Uncategorized URL	Either pass or block (filter) access to a cached URL when the categorization server fails to classify a request type. Access is allowed by default.

Select OK to save the changes to the Web filter policy. Select Exit to close the screen without saving the updates.