Security
80
N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700v2
Add Custom Services to Allow or Block
You can define your own incoming and outgoing custom services to allow or block. Once you
add your own custom services, they will be available on the Outbound Services screen (as
described in
Firewall Rules
on page
77) and the Port Forwarding/Inbound Services screen
(as described in
Port Forwarding and Triggering
on page
105).
To add a custom service:
1.
Click
Add Custom Service
to add a service. The Add Service screen displays:
The Add Service screen allows you to specify or edit your own custom service definition.
You can then use the custom service when creating firewall rules.
2.
To add a service for blocking, first determine which port number or range of numbers is used
by the application.
3.
Name
. In the Name field, enter a suitable name for this service.
4.
Type
. Select the correct type for this service (if in doubt, select TCP/UDP):
•
TCP
•
UDP
•
TCP/UDP
5.
Start Port
and
End Port
. Enter the starting and ending port numbers. If the application uses
a single port number, enter that number in both fields.
6.
Click
Apply
to save your information and return to the previous screen.
