User's Manual

Advanced Features
49
The "DMZ PC" is effectively outside the Firewall, mak-
ing it more vulnerable to attacks. For this reason, you
should only enable the DMZ feature when required.
URL Filter
The URL Filter allows you to block access to undesirable Web site
• To use this feature, you must define "filter strings". If the "filter string" appears in a re-
quested URL, the request is blocked.
• Enabling the URL Filter also affects the Internet Access Log. If Enabled, the "Destination"
field in the log will display the URL. Otherwise, it will display the IP Address.
• The
URL Filter
can be Enabled or Disabled on the
Advanced Internet
screen.
URL Filter Screen
Click the "Configure URL Filter" button on the Internet screen to access the URL Filter screen.
An example screen is shown below.
Figure 32: URL Filter Screen
Data - URL Filter Screen
Filter Strings
Current Entries This lists any existing entries. If you have not entered any values, this
list will be empty.
Add Filter String To add an entry to the list, enter it here, and click the "Add" button.
An entry may be a Domain name (e.g. www.trash.com) or simply a
string. (e.g. ads/ )
Any URL which contains ANY entry ANYWHERE in the URL will be
blocked.
Wireless Router User Guide
50
Buttons
Delete/Delete All Use these buttons to delete the selected entry or all entries, as required.
Multiple entries can be selected by holding down the CTRL key while
selecting.(On the Macintosh, hold the SHIFT key while selecting.)
Add Use this to add the current Filter String to the site list.
Access Control
This feature is accessed by the Access Control link on the Advanced menu.
Overview
The Access Control feature allows administrators to restrict the level of Inte rnet Access avail-
able to PCs on your LAN. With the default settings, everyone has unrestricted Internet access.
To use this feature:
1. Set the desired restrictions on the "Default" group. All PCs are in the "Default" group
unless explicitly moved to another group.
2. Set the desired restrictions on the other groups ("Group 1", "Group 2", "Group 3" and
"Group 4") as needed.
3. Assign PC to the groups as required.
Restrictions are imposed by blocking "Services", or types of
connections. All common Services are pre-defined.
If required, you can also define your own Services.
Access Control Screen
To view this screen, select the Access Control link on the Advanced menu.