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Page 71 / 118 Scroll up to view Page 66 - 70
NETGEAR RangeMax™ NEXT Wireless Router WNR834B User Manual
Fine-Tuning Your Network
6-7
v1.2, January 2007
1.
From the main menu of the browser interface, under Advanced, click on Port Forwarding /Port
Triggering to view the port forwarding menu.
2.
From the Service Name box, select the service or game that you will host on your network.
If the service does not appear in the list, see the following section,
“Adding a Custom
Service”
.
3.
In the corresponding Server IP Address box, enter the last digit of the IP address of your local
computer that will provide this service.
4.
Click Add. The service will appear in the list on the menu.
Adding a Custom Service
To define a service, game, or application that does not appear in the Service Name list, you must
first determine which port number or range of numbers is used by the application. This
information can usually be determined by contacting the publisher of the application or from user
groups or newsgroups. When you have the port number information, follow these steps:
1.
From the main menu of the browser interface, under Advanced, click Port Forwarding /Port
Triggering.
Figure 6-1
Page 72 / 118
NETGEAR RangeMax™ NEXT Wireless Router WNR834B User Manual
6-8
Fine-Tuning Your Network
v1.2, January 2007
2.
Click Add Custom Service.
3.
In the Service Name box, type a descriptive name.
4.
In the Service Type box, select the protocol. If you are unsure, select TCP/UDP.
5.
In the Starting Port box, type the beginning port number.
•
If the application uses only a single port, type the same port number in the
Ending Port box.
•
If the application uses a range of ports, type the ending port number of the range in the
Ending Port box.
6.
In the Server IP Address box, type the IP address of your local computer that will provide this
service.
7.
Click Apply. The service will appear in the list in the Port Forwarding /Port Triggering menu.
Editing or Deleting a Port Forwarding Entry
To edit or delete a Port Forwarding entry:
1.
In the table, select the button next to the service name.
2.
Click Edit Service or Delete Service.
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:
Figure 6-2
Page 73 / 118
NETGEAR RangeMax™ NEXT Wireless Router WNR834B User Manual
Fine-Tuning Your Network
6-9
v1.2, January 2007
1.
Assign your Web server either a fixed IP address or a dynamic IP address using DHCP
Address Reservation, as explained in
“Using Address Reservation” on page 5-4
. In this
example, your router will always give your Web server an IP address of
192.168.1.33.
2.
Configure the Port Forwarding menu to forward the HTTP service to the local address of your
Web server at
192.168.1.33.
HTTP (port 80) is the standard protocol for Web servers.
3.
(Optional) Register a host name with a Dynamic DNS Service and configure your router to use
the name as described in
“Using a Dynamic DNS Service” on page 5-5
.
To access your Web server from the Internet, a remote user must know the IP address that has
been assigned by your ISP. However, if you use a Dynamic DNS Service, the remote user can
reach your server by a user-friendly Internet name, such as
mynetgear.dyndns.org
.
Configuring Port Triggering
Port Triggering is a dynamic extension of Port Forwarding that is useful when:
•
More than one local computer needs port forwarding for the same application (but not
simultaneously) or
•
An application needs to open incoming ports that are different from the outgoing port.
When Port Triggering is enabled, the router monitors outbound traffic looking for a specified
outbound “trigger” port. When the router detects outbound traffic on that port, it remembers the IP
address of the local computer that sent the data. The router then temporarily opens the specified
incoming port or ports, and forwards incoming traffic on the triggered ports to the triggering
computer.
While Port Forwarding creates a static mapping of a port number or range to a single local
computer, Port Triggering can dynamically open ports to any computer that needs them and can
close the ports when they are no longer needed.
To configure Port Triggering, you need to know which inbound ports the application needs. Also,
you need to know the outbound port number that will trigger the opening of the inbound ports.
This information can usually be determined by contacting the publisher of the application or from
user groups or newsgroups.
Note:
If you use applications such as multi-player gaming, peer-to-peer connections, real-
time communications such as instant messaging, or remote assistance (a feature in
Windows XP), you should also enable Universal Plug and Play (UPnP) according
to the instructions in
“Using Universal Plug and Play” on page 6-12
.
Page 74 / 118
NETGEAR RangeMax™ NEXT Wireless Router WNR834B User Manual
6-10
Fine-Tuning Your Network
v1.2, January 2007
To set up Port Triggering:
1.
In the main menu, under Advanced, Select Port Forwarding/Port Triggering.
2.
Select the Port Triggering radio button. The Port Triggering screen appears.
3.
Deselect the checkbox for Disable Port Triggering.
4.
For Port Triggering Timeout, enter a value up to 9999 minutes. This value controls the
inactivity timer for the designated inbound port(s). The inbound port(s) close when the
inactivity timer expires. This is required because the router cannot be sure when the
application has terminated.
Figure 6-3
Note:
If the Disable Port Triggering checkbox is selected after configuring port
triggering, port triggering is disabled. However, any port triggering configuration
information you added to the router is retained even though it will not be used.
Page 75 / 118
NETGEAR RangeMax™ NEXT Wireless Router WNR834B User Manual
Fine-Tuning Your Network
6-11
v1.2, January 2007
5.
Click Add Service.
6.
In the Service Name box, type a descriptive service name.
7.
Under Service User, select Any (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 sure, select
TCP/UDP.
9.
In the Triggering Port box, enter the outbound traffic port number that will cause the inbound
ports to be opened.
10.
Enter the inbound connection port information such as Connection Type, Starting Port, and
Ending Port boxes.
11.
Click Apply. The service appears in the Port Triggering Portmap Table.
Figure 6-4

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