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Manage Port Forwarding and Port Triggering
166
AC1600 WiFi Cable Modem Router
Manage Port Forwarding to a Local Server for Services,
Applications, and Games
If a server is part of your network, you can allow certain types of incoming traffic to reach the
server. For example, you might want to make a local web server, FTP server, or game server
visible and available to the Internet.
The modem router can forward incoming traffic with specific protocols to computers on your
local network. You can specify the servers for applications and you can also specify a default
DMZ server to which the modem router forwards all other incoming protocols (see
Set Up a
Default DMZ Server
on page
82).
Forward Incoming Traffic for a Default Service or Application
You can forward traffic for a default service or application to a computer on your network.
To forward incoming traffic for a default service or application:
1.
Decide which type of service, application, or game you want to provide.
2.
Find the local IP address of the computer on your network that will provide the service.
The server computer must always receive the same IP address. To specify this setting,
use the reserved IP address feature. See
Manage IP Address Reservation
on page
85.
3.
Launch an Internet browser from a computer or WiFi device that is connected to the
network.
4.
Type
.
A login window opens.
5.
Type
admin
for the user name and type your password.
If you did not yet personalize your password, type
password
for the password.
6.
Click the
OK
button.
The BASIC Home page displays.
7.
Select
ADVANCED > Advanced Setup > Port Forwarding / Port Triggering
.
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AC1600 WiFi Cable Modem Router
8.
Make sure that the
Port Forwarding
radio button is selected.
9.
From the
Service Name
menu, select the service or application.
If the service or application that you want to add is not in the menu, create a port
forwarding rule with a custom service or application (see
Add a Port Forwarding Rule with
a Custom Service or Application
on page
167).
10.
In the
Server IP Address
field, enter the IP address of the computer that must provide the
service or that runs the application.
11.
Click the
Add
button.
Your settings are saved. The rule is added to the table on the Port Forwarding / Port
Triggering page.
Add a Port Forwarding Rule with a Custom Service or
Application
The modem router lists default services and applications that you can use in port forwarding
rules. If the service or application is not predefined, you can add a port forwarding rule with a
custom service or application.
To add a port forwarding rule with a custom service or application:
1.
Find out which port number or range of numbers the service or application uses.
You can usually find this information by contacting the publisher of the service or
application or through user groups or news groups.
2.
Launch an Internet browser from a computer or WiFi device that is connected to the
network.
3.
Type
.
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AC1600 WiFi Cable Modem Router
A login window opens.
4.
Type
admin
for the user name and type your password.
If you did not yet personalize your password, type
password
for the password.
5.
Click the
OK
button.
The BASIC Home page displays.
6.
Select
ADVANCED > Advanced Setup > Port Forwarding / Port Triggering
.
The Port Forwarding / Port Triggering page displays.
7.
Make sure that the
Port Forwarding
radio button is selected.
8.
Click the
Add Custom Service
button.
9.
Specify a new port forwarding rule with a custom service or application as described in the
following table.
Field
Description
Service Name
Enter the name of the custom service or application.
Service Type
Select the protocol (
TCP
or
UDP
) that is associated with the service or application.
If you are unsure, select
TCP/UDP
.
External Starting Port
Enter the external start port number that the service or application uses.
External Ending Port
Enter the external end port number that the service or application uses.
Internal Starting Port
Specify the internal start port by one of these methods:
Leave the
Use the same port range for Internal port
check box selected.
Clear the
Use the same port range for Internal port
check box and enter
the internal start port number that the service or application uses.
Internal Ending Port
Specify the internal end port by one of these methods:
Leave the
Use the same port range for Internal port
check box selected.
Clear the
Use the same port range for Internal port
check box and enter
the internal end port number that the service or application uses.
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Manage Port Forwarding and Port Triggering
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AC1600 WiFi Cable Modem Router
10.
Click the
Apply
button.
Your settings are saved. The rule is added to the table on the Port Forwarding / Port
Triggering page.
Change a Port Forwarding Rule
You can change an existing port forwarding rule.
To change a port forwarding rule:
1.
Launch an Internet browser from a computer or WiFi device that is connected to the
network.
2.
Type
.
A login window opens.
3.
Type
admin
for the user name and type your password.
If you did not yet personalize your password, type
password
for the password.
4.
Click the
OK
button.
The BASIC Home page displays.
5.
Select
ADVANCED > Advanced Setup > Port Forwarding / Port Triggering
.
The following figure shows two port forwarding rules.
Internal IP address
Either enter an IP address in the
Internal IP address
field or select the radio
button for an attached device that is listed in the table.
External IP address
Specify the external IP address by one of these methods:
Leave
Any
selected from the
External IP address
menu.
Select
Single address
from the
External IP address
menu and enter the IP
address that is allowed to reach the service or application.
Field
Description
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6.
Make sure that the
Port Forwarding
radio button is selected.
7.
In the table, select the radio button next to the service or application name.
8.
Click the
Edit Service
button.
The Ports - Custom Services page displays.
9.
Change the settings.
For more information about the settings, see
Add a Port Forwarding Rule with a Custom
Service or Application
on page
167.
10.
Click the
Apply
button.
Your settings are saved. The changed rule displays in the table on the Port Forwarding /
Port Triggering page.
Remove a Port Forwarding Rule
You can remove a port forwarding rule that you no longer need.
To remove a port forwarding rule:
1.
Launch an Internet browser from a computer or WiFi device that is connected to the
network.
2.
Type
.
A login window opens.
3.
Type
admin
for the user name and type your password.
If you did not yet personalize your password, type
password
for the password.

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