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E-DOC-CTC-20080421-0010 v1.0
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7 Internet Security
7.2 Web Site Filtering
Introduction
The Thomson Gateway allows you to deny access to specific web sites.
Access Denied page
When a user tries to access a page that is being blocked, the following page is displayed:
Address-based filtering
With address-based filtering you can block web sites based on their address, also called URL (for example
www.porn.com).
But as, you know, the Internet consists of a large number of web sites, and that number still increases every
day. This makes it almost impossible to keep this list up to date.
To solve this problem Thomson Gateway introduced content based filtering.
Content-based filtering
With content-based filtering allows you can block web sites based on their content category (for example
pornography) instead of the their URL. This way, you only need select the appropriate categories when you
enable this feature and the content category server takes care of the rest. This content category server is
updated at regular intervals.
Combining the two filters
Address-based filtering has priority over content-based filtering. This means that when you are blocking a
specific category (for example Finance / Investment), you can still access (netbanking.mybank.com) provided
you create a rule to allow access to that URL (for example netbanking.mybank.com).
Activating content-based filtering
Before you can use content-based filtering you must first activate it by purchasing a license key at your
Internet Service Provider (ISP) or by activating the 30-day trial.
Proceed as follows:
1 Browse to the Thomson Gateway Web Interface.
2 On the Toolbox menu, click Web Site Filtering.
3 In the Pick a task list, click Activate Web Filtering License.