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Page 61 / 94 Scroll up to view Page 56 - 60
54Mbps Wireless Router Model KWGR614 Reference Manual
Advanced Configuration of the Router
5-3
v1.2, September 2006
1.
Click
Add Service
.
2.
Enter a service name in the Service Name box.
3.
In the Service User box, selecting the default value of
Any
allows the service to be used by
everyone in your network. Otherwise, to restrict the service to a particular PC, select
Single
address
and enter the PC’s IP address.
4.
In the Service Type box, select between
TCP
(the default) and
UDP
.
5.
In the Triggering Port box, enter the outbound port number that the application will use.
6.
Set the parameters for the inbound connection—the connection type (TCP or UDP), the
starting port, and ending port numbers.
7.
Click
Apply
to save your changes.
Figure 5-2
Note:
For the information required for steps 4-6 above, refer to the game or
applications manual or support website.
Page 62 / 94
54Mbps Wireless Router Model KWGR614 Reference Manual
5-4
Advanced Configuration of the Router
v1.2, September 2006
Configuring for Port Forwarding to Local Servers
Although the router causes your entire local network to appear as a single machine to the Internet,
you can make a local server (for example, a Web server or game server) visible and available to the
Internet. This is done using the Port Forwarding menu. From the Main Menu of the browser
interface, under Advanced, click on Port Forwarding to view the port forwarding menu, shown
below.
.
Use the Port Forwarding menu to configure the router to forward incoming protocols to computers
on your local network. In addition to servers for specific applications, you can also specify a
Default DMZ Server to which all other incoming protocols are forwarded. The DMZ Server is
configured in the Security Menu.
Before starting, you need to determine which type of service, application or game you will provide
and the IP address of the computer that will provide each service. Be sure the computer’s IP
address never changes. To configure port forwarding to a local server:
Figure 5-3
Note:
If you are unfamiliar with networking and routing, refer to
“Internet Networking
and TCP/IP Addressing” in Appendix B
, to become more familiar with the terms
and procedures used in this manual.
Page 63 / 94
54Mbps Wireless Router Model KWGR614 Reference Manual
Advanced Configuration of the Router
5-5
v1.2, September 2006
1.
From the Service & Game box, select the service or game that you will host on your network.
If the service does not appear in the list, refer to the following section, “
Adding a Custom
Service
”.
2.
Enter the IP address of the local server in the corresponding Server IP Address box.
3.
Click the
Add
button.
Adding a Custom Service
To define a service, game or application that does not appear in the Services & Games list, you
must determine what port numbers are used by the service. For this information, you may need to
contact the manufacturer of the program that you wish to use. When you have the port number
information, follow these steps:
1.
If port forwarding services are already configured, make a note of the Start Port and the End
Port used by each service.
2.
Click the
Add Custom Service
button.
3.
In the Service Name box, type a name.
4.
Enter an unused port number in the Starting Port box.
Note:
To assure that the same computer always has the same IP address, use the reserved
IP address feature of your 54Mpbs Wireless Router. See
“Using Address
Reservation” on page 5-11
for instructions on how to use reserved IP addresses.
Figure 5-4
Page 64 / 94
54Mbps Wireless Router Model KWGR614 Reference Manual
5-6
Advanced Configuration of the Router
v1.2, September 2006
5.
To forward only one port, enter it again in the Ending Port box. To specify a range of ports,
enter the last port to be forwarded in the Ending Port box, making sure that the range of ports
being forwarded does not overlap with any currently configured services.
6.
Enter the IP address of the local server in the corresponding Server IP Address box.
7.
Click
Apply
at the bottom of the menu.
Editing or Deleting a Port Forwarding Entry
To edit or delete a Port Forwarding entry, follow these steps.
1.
In the table, select the button next to the service name.
2.
Click Edit or Delete.
Local Web and FTP Server Example
If a local computer with a private IP address of 192.168.1.33 acts as a Web and FTP server,
configure the Ports menu to forward HTTP (port 80) and FTP (ports 20 and 21) to local address
192.168.1.33.
To access this server from the Internet, the remote user must know the IP address that has been
assigned by your ISP. If this address is 172.16.1.23, for example, an Internet user can access your
Web server by directing the browser to http://172.16.1.23. The assigned IP address can be found in
the Router Status Menu, where it is shown as the WAN IP Address.
Some considerations for this application are:
•
If your account’s IP address is assigned dynamically by your ISP, the IP address may change
periodically as the DHCP lease expires.
•
If the IP address of the local computer is assigned by DHCP, it may change when the computer
is rebooted. To avoid this, you can manually configure the computer to use a fixed address.
•
Local computers must access the local server using the computers’ local LAN address
(192.168.1.33 in this example). Attempts by local computers to access the server using the
external IP address (172.16.1.23 in this example) will fail.
Multiple Computers for Internet Game Example
To set up an additional computer to play an Internet game:
1.
Select the game again from the Services/Games list.
Page 65 / 94
54Mbps Wireless Router Model KWGR614 Reference Manual
Advanced Configuration of the Router
5-7
v1.2, September 2006
2.
Change the beginning port number in the Start Port box.
For these games, use the supplied number in the default listing and add +1 for each additional
computer. For example, if you've already configured one computer to play Hexen II (using
port 26900), the second computer's port number would be 26901, and the third computer
would be 26902.
3.
Type the same port number in the End Port box that you typed in the Start Port box.
4.
Type the IP address of the additional computer in the Server IP Address box.
5.
Click Apply.
Some online games and videoconferencing applications are incompatible with NAT. The 54Mpbs
Wireless Router is programmed to recognize some of these applications and to work properly with
them, but there are other applications that may not function well. In some cases, one local
computer can run the application properly if that computer’s IP address is entered as the default in
the Ports Menu. If one local computer acts as a game or videoconferencing host, enter its IP
address as the default.
Configuring the WAN Setup Options
The WAN Setup options let you configure a DMZ server, change the MTU size and enable the
wireless router to respond to a Ping on the WAN port. These options are discussed below.
Setting Up a Default DMZ Server
The default DMZ server feature is helpful when using some online games and videoconferencing
applications that are incompatible with NAT. The router is programmed to recognize some of these
applications and to work properly with them, but there are other applications that may not function
well. In some cases, one local computer can run the application properly if that computer’s IP
address is entered as the default DMZ server.
Incoming traffic from the Internet is normally discarded by the router unless the traffic is a
response to one of your local computers or a service that you have configured in the Ports menu.
Instead of discarding traffic for services you have not defined, you can have it forwarded to one
computer on your network. This computer is called the Default DMZ Server.
Note:
DMZ servers pose a security risk. A computer designated as the default DMZ
server loses much of the protection of the firewall, and is exposed to exploits from
the Internet. If compromised, the DMZ server can be used to attack your network.

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