2

INSTALLATION DECISIONS

Other Considerations

OTHER CONSIDERATIONS

This section contains general information that you should be aware of when installing and configuring SurfControl Web Filter.

INTERNET THREAT DATABASE

SurfControl’s Internet Threat Database is the best category database in the Internet security industry and provides the most accurate, current, and relevant content listing available. The Internet Threat Database includes:

55 structured categories.

24 million sites, including more than 3.5 billion web pages.

International content, including 70 languages and over 200 countries.

Daily updates (more than 100,000 new sites a week).

The Internet Threat Database is stored in an encrypted, size-optimized file called SurfControl Categories.csf.

Incremental updates (up to 60 MB) are stored in an encrypted file called SurfControl Categories.cdb.

With Web Filter, you can manually categorize destinations; these are added to the SurfControl Manual Categories.ucf file.

VCA categorized destinations are added to the SurfControl VCA Categories.ucf file.

Web Filter checks the categorization files in the following order:

1Manually-categorized sites (SurfControl Manual Categories.ucf).

2Incremental updates (SurfControl Categories.cdb).

3Internet Threat Database (SurfControl Categories.csf).

4VCA categorized sites (SurfControl VCA Categories.ucf).

CATEGORIZATION OPTIONS

You can select whether to send feedback on uncategorized sites back to SurfControl, and how Web Filter categorizes your own domains.

Internet Threat Database Improvement Program

When Web Filter encounters an uncategorized Web site, it can send the details anonymously to SurfControl. This helps SurfControl to improve the effectiveness of the Internet Threat Database in future updates.

Company & Intranet

You can enter your company domains and Intranet site addresses during the Configuration Wizard so that Web Filter categorizes them as Company & Intranet.

24 Starter Guide

SurfControl Web Filter for ISA v5.5

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Surf Control v5.5 manual Other Considerations, Internet Threat Database, Categorization Options, Company & Intranet