Owner's Manual

Advanced Settings
97
N900 Wireless Dual Band Gigabit Router R4500
This value controls the inactivity timer for the designated inbound ports. The inbound
ports close when the inactivity time expires. This is required because the router cannot
determine when the application has terminated.
5. Click Add
Service:
6. In the Service Name field, type a descriptive service name.
7. In the Service
User list, select one of the following:
• Any (the de
fault) to allow any computer on the Internet to use this service.
• Sin
gle address, and enter the IP address of one computer to restrict the service to a
particular computer.
8. Select
the service type, either TCP or UDP or both (TCP/UDP). If you are not sure, select
TCP/UDP.
9. In the T
riggering Port field, enter the number of the outbound traffic port that will cause the
inbound ports to be opened.
10. Ente
r the inbound connection port information in the Connection Type, Starting Port, and
Ending Port fields.
11. Click App
ly.
The service appears in the Port Triggering Portmap table.
Dynamic DNS
If your Internet service provider (ISP) gave you a permanently assigned IP address, you can
register a domain name and have that name linked with your IP address by public Domain
Name Servers (DNS). However, if your Internet account uses a dynamically assigned IP
address, you do not know in advance what your IP address will be, and the address can
change frequently. In this case, you can use a commercial Dynamic DNS service. This type