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Page 121 / 162 Scroll up to view Page 116 - 120
Advanced Settings
121
D6200 WiFi DSL Modem Router
3.
Click the
Add Custom Service
.
4.
In the Name field, enter a descriptive name.
5.
In the Type list, select the protocol. If you are unsure, select
TCP/UDP
.
6.
In the Start Port field, enter the beginning port number.
•
If the application uses a single port, enter the same port number in the End Port field.
•
If the application uses a range of ports, enter the ending port number of the range in
the End Port field.
7.
Click
Apply
.
The service appears in the list in the Port Forwarding/Port Triggering screen.
Edit or Delete a Port Forwarding Entry
To edit or delete a port forwarding entry:
1.
Select
ADVANCED > Advanced Setup > Port Forwarding/Port Triggering
.
2.
In the table, select the radio button next to the service name.
3.
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:
1.
Assign your web server either a fixed IP address or a dynamic IP address using DHCP
address reservation.
In this example, your WiFi DSL modem router always gives your web server an IP
address of 192.168.1.33.
Page 122 / 162
Advanced Settings
122
D6200 WiFi DSL Modem Router
2.
In the Port Forwarding/Port Triggering screen, configure the WiFi DSL modem router 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 WiFi DSL
modem router to use the name.
For more information, see
Dynamic DNS
on page 124.
To access your web server from the Internet, a remote user has to 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.
Set Up Port Triggering
Port triggering is a dynamic extension of port forwarding that is useful in these cases:
•
More than one local computer needs port forwarding for the same application (but not
simultaneously).
•
An application needs to open incoming ports that are different from the outgoing port.
When port triggering is enabled, the WiFi DSL modem router monitors outbound traffic
looking for a specified outbound “trigger” port. When the WiFi DSL modem router detects
outbound traffic on that port, it remembers the IP address of the local computer that sent the
data. The WiFi DSL modem 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.
Note:
If you use applications such as multiplayer 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). For more information, see
Universal Plug and Play
on page 131.
To set up port triggering, you need to know which inbound ports the application needs. Also,
you need to know the number of the outbound port that triggers the opening of the inbound
ports. You can usually determine this information by contacting the publisher of the
application or user groups or newsgroups.
To set up port triggering:
1.
Select
ADVANCED > Advanced Setup > Port Forwarding/Port Triggering
.
Page 123 / 162
Advanced Settings
123
D6200 WiFi DSL Modem Router
2.
Select the
Port Triggering
radio button.
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 triggering
configuration information you added to the WiFi DSL modem router is retained
even though it is not used.
4.
In the Port Triggering Timeout field, enter a value up to 9999 minutes.
This value controls the inactivity timer for the designated inbound ports. The inbound
ports close when the inactivity time expires. This closure is required because the WiFi
DSL modem router cannot be sure when the application has terminated.
Page 124 / 162
Advanced Settings
124
D6200 WiFi DSL Modem Router
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).
This service can 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 field, enter the number of the outbound traffic port that causes the
inbound ports to open.
10.
Enter the inbound connection port information in the Connection Type, Starting Port, and
Ending Port fields.
11.
Click
Apply
.
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 is, and the address can change
frequently. In this case, you can use a commercial Dynamic DNS service. This type of service
lets you register your domain to their IP address and forwards traffic directed at your domain
to your frequently changing IP address.
If your ISP assigns a private WAN IP address (such as 192.168.x.x or 10.x.x.x), the Dynamic
DNS service does not work because private addresses are not routed on the Internet.
Page 125 / 162
Advanced Settings
125
D6200 WiFi DSL Modem Router
Your WiFi DSL modem router contains a client that can connect to the Dynamic DNS service
provided by DynDNS.org. First visit their website at
and obtain an
account and host name that you configure in the WiFi DSL modem router. Then, whenever
your ISP-assigned IP address changes, your WiFi DSL modem router automatically 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 WiFi DSL modem
To set up Dynamic DNS:
1.
Select
ADVANCED> Advanced Setup > Dynamic DNS
.
2.
Register for an account with one of the Dynamic DNS service providers whose URLs
appear in the Service Provider list.
3.
Select the
Use a Dynamic DNS Service
check box.
4.
Select the URL of your Dynamic DNS service provider.
For example, for DynDNS.org, select
www.dyndns.org
.
5.
Type the host name (or domain name) that your Dynamic DNS service provider gave you.
6.
Type the user name for your Dynamic DNS account.
This name is the name that you use to log in to your account, not your host name.
7.
Type the password (or key) for your Dynamic DNS account.
8.
Click
Apply
.

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