Netgear Dgnd4000 N750 Wireless Dual Band Gigabit Adsl2 Plus Modem Router User Manual

Advanced Settings 
111  N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000
the wireless modem router to open additional incoming ports when a particular outgoing port 
originates a session.
An example is Internet Relay Chat (IRC). Your computer connects to an IRC server at 
destination port 6667. The IRC server not only responds to your originating source port, but 
also sends an “identify” message to your computer on port 113. Using port triggering, you can 
tell the wireless modem router, “When...

Advanced Settings 
112 N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000 
Port Forwarding to Permit External Host Communications
In both of the preceding examples, your computer initiates an application session with a 
server computer on the Internet. However, you might need to allow a client computer on the 
Internet to initiate a connection to a server computer on your network. Normally, your wireless 
modem router ignores any inbound traffic that is not a response to your own outbound...

Advanced Settings 
113  N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000
How Port Forwarding Differs from Port Triggering
The following points summarize the differences between port forwarding and port triggering:
•Port triggering can be used by any computer on your network, although only one 
computer can use it at a time.
•Port forwarding is configured for a single computer on your network.
•Port triggering requires that you know the computer’s IP address in advance. The IP 
address is...

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1. 
Select  ADVANCED > Advanced Setup > Port Forwarding/Port Triggering.
Port Forwarding is selected as the service type.
2.  Click  Add.
3. From the Service list, select the service or game that you host on your \
network. If the service 
does not appear in the list, see  Add a Custom Service on page 11 5.
4.  From the 
 Action list, select the action that you want.
5.  In the Send to LAN Server field, enter the last digit...

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Add a Custom Service
To define a service, game, or application that does not appear in the Ser\
vice Name list, you 
have to first determine which port number or range of numbers is used by\
 the application. 
You can usually determine this information by contacting the publisher of\
 the application or  user groups or newsgroups. 
To add a custom service:
1.  Select  ADV
 ANCED > Advanced Setup > Port Forwarding/Port...

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Application Example: Making a Local Web Server Public
If you host a web server on your local network, you can use port forwarding to allow web 
requests from anyone on the Internet to reach your web server. 
To make a local web server public:
1. Assign your web server either a fixed IP address or a dynamic IP address using DHCP 
address reservation. In this example, your wireless modem router always gives your 
web server...

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 N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000
To set up port triggering: 
1. 
Select  ADV
 ANCED > Advanced Setup > Port Forwarding/Port Triggering .
2.  Select the Port T
 riggering radio button to display the port triggering information.
3. Clear the Disable Port Triggering check box if it is selected.
Note: If the Disable Port Triggering check box is selected after you configure\
 
port triggering, port triggering is disabled. However, any port triggeri\
ng...

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5. 
Click  Add Service.
6. In the Service Name field, type a descriptive service name. 
7.  In the Service User list, select  Any (the default) to allow this service to be used by any 
computer on the Internet. Otherwise, select  Single 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...

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 N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000
account and host name that you configure in the wireless modem router. Then, whenever 
your ISP-assigned IP address changes, your wireless modem router automat\
ically contacts 
the Dynamic DNS service provider, logs in to your account, and registers your new IP 
address. If your host name is hostname, for example, you can reach your \
wireless modem 
router at http://hostname.dyndns.org.
On the Advanced tab, select...

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As an example of when a static route is needed, consider the following c\
ase:
• Y
our primary Internet access is through a cable modem to an ISP.
•Y
ou have an ISDN wireless modem router on your home network for connectin\
g to the 
company where you are employed. This wireless modem router’s address on your LAN is 
192.168.1.100.
• Y
our company’s network address is 134.177.0.0.
When you first configured your wireless...