User manual

Chapter 4. Security Settings | 51
N150 Wireless ADSL2+ Modem Router DGN1000 User Manual
Outbound Rules (Service Blocking)
The wireless modem router lets you block computers on your local network from using
certain Internet services. This is called service blocking or port filtering. You can define an
outbound rule to block Internet access from a local computer based on local computer,
Internet site being contacted, time of day, and type of service being requested.
1. Select Security > Firewall Rules to display the following screen:
Figure 28. Block computers in your network from using certain Internet services
2. Under Outbound Services, click Add.
3. Fill in the settings as follows and click Apply to save your settings.
Service. From this list, select the application or service to be allowed or blocked. The list
already displays many common services, but you are not limited to these choices. Use
the Add Custom Service button in the Services screen described in Configure Services
on page 52 to add any additional services or applications that do not already appear.
Action. Choose how to handle this type of traffic. You can block or allow always, or you
can block or allow according to the schedule you defined, as described in Schedule
Firewall Services on page 55.
LAN Users. These settings determine which packets are covered by the rule, based on
their source LAN IP address. Select the option that you want:
Any. All IP addresses are covered by this rule.
Address range. If this option is selected, fill in the Start and Finish fields.
Single address. Enter the required address in the Start field.
WAN Users. These settings determine which packets are covered by the rule, based on
their destination WAN IP address. Select the option that you want:
Any. All IP addresses are covered by this rule.
Address range. If this option is selected, fill in the Start and Finish fields.