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Chapter 5: Configuring the ADSL Gateway
The Security Tab
ADSL Gateway with 4-Port Switch
The Security Tab
Firewall
When you click the Security tab, you will see the Firewall screen. This screen contains Filters and the option to
Block WAN Requests. Filters block specific Internet data types and block anonymous Internet requests.
• Firewall. To add Firewall Protection, click Enabled. If you do not want Firewall Protection, click Disabled.
Additional Filters. Select the filter(s) you want to enable.
• Filter Proxy. Use of WAN proxy servers may compromise the Gateway's security. Denying Filter Proxy will
disable access to any WAN proxy servers.
• Filter Cookies. A cookie is data stored on your computer and used by Internet sites when you interact with
them.
• Filter Java Applets. Java is a programming language for websites. If you deny Java Applets, you run the risk
of not having access to Internet sites created using this programming language.
• Filter ActiveX. ActiveX is a programming language for websites. If you deny ActiveX, you run the risk of not
having access to Internet sites created using this programming language.
• Filter Multicast. IP Multicasting occurs when a single data transmission is sent to multiple recipients at the
same time. Using this feature, the Router allows IP multicast packets to be forwarded to the appropriate
computers.
Block WAN requests
• Block Anonymous Internet Requests. This keeps your network from being “pinged” or detected and
reinforces your network security by hiding your network ports, so it is more difficult for intruders to discover
your network. Select Block Anonymous Internet Requests to block anonymous Internet requests or de-
select it to allow anonymous Internet requests.
Click View Logs to view a log of any firewall events.
When finished making your changes on this tab, click the Save Settings button to save these changes, or click
the Cancel Changes button to undo your changes.
Figure 5-13: Security Tab - Firewall
multicasting: sending data to a group of destinations at once