June 22, 2010
The Filter List (aka "iGuard") is the human-rated URL database, updated daily, that makes iPrism filtering so effective! The Filter List also includes IM/P2P filtering information and hostname "Anti-Spoofing" information.
Approximately 600,000 to 750,000 URLs are rated every business quarter (3 months) by the St. Bernard iGuard team, making it the most accurate URL filtering database available.
If a URL is not rated, iPrism Administrators may manually submit URLs, see:
How do I submit URLs for Review?
To have iPrism automatically submit un-rated URLs (highly recommended), see:
iPrism v5.0 iARP - iPrism Automatic Rating Protocol
URLs are identified as belonging to a well-defined category, known as a "site-rating". To list categories with their corresponding definitions, see:
In addition to web (http/https) filtering, iPrism provides filtering for IM/P2P protocols, see:
What IM/P2P Applications & Protocols are Filtered?
The Filter List also supports measures to flag attempts at hostname "spoofing," see:
How do I use Host-to-IP Anti-Spoofing in iPrism?
How do I Disable or Configure Host-to-IP Anti-Spoofing?
Site-Ratings can be over-ridden or setup for URLs that don't have a rating, and you can submit URLs to St. Bernard Software to be rated, see:
How do I use Custom Filters?
The Filter List is typically updated and downloaded to your appliance daily, assuming your appliance is configured for automatic Filter List updates. Because of the importance of an up-to-date Filter List, see:
How do I Schedule Filter List and System Updates?
How do I check my last Filter List Update?
Why is the Filter List NOT Up-to-Date?
How do I download a Filter List Manually?
How do I check Filter List Server Connectivity?
Why are all users getting the message, "Filter service expired" in their browsers?