Advanced Settings

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N150 4-Port Wireless Router JNR1010

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) according to the instructions

in

Universal Plug and Play

on page

81.

To set up port triggering, you must know which inbound ports the application needs and the

number of the outbound port that will trigger the opening of the inbound ports. You can

usually get 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

.

2.

Select the

Port Triggering

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 triggering

configuration information you added to the 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 value is required because the router

cannot be sure when the application has terminated.

Advanced Settings

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N150 4-Port Wireless Router JNR1010

5.

Click

Add Service

to display the following screen:

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 sure, select TCP/UDP.

9.

In the Triggering Port field, enter the number of the outbound traffic port that will cause the

inbound ports to be opened.

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 will be, 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.

Your router contains a client that can connect to the Dynamic DNS service provided by

DynDNS.org. First visit

and obtain an account and host name that you

configure in the router. Then, whenever your ISP-assigned IP address changes, your router

automatically contacts the Dynamic DNS service provider, logs in to your account, and

Advanced Settings

78

N150 4-Port Wireless Router JNR1010

registers your new IP address. If your host name is hostname, for example, you can reach

your router at

.

On the Advanced tab, select

Advanced Setup > Dynamic DNS

to display the following

screen:



To set up Dynamic DNS:

1.

Register for an account with one of the Dynamic DNS service providers whose names

appear in the Service Provider list.

For example, for DynDNS.org, select

www.dyndns.org

.

2.

Select the

Use a Dynamic DNS Service

check box.

3.

Select the name of your Dynamic DNS service provider.

4.

Type the host name (or domain name) that your Dynamic DNS service provider gave you.

5.

Type the user name for your Dynamic DNS account.

Enter the name that you use to log in to your account, not your host name.

6.

Type the password (or key) for your Dynamic DNS account.

7.

If your Dynamic DNS provider allows the use of wildcards in resolving your URL, you can

select the

Use Wildcards

check box to activate this feature.

For example, the wildcard feature causes

*.yourhost.dyndns.org

to be aliased to the

same IP address as yourhost.dyndns.org.

8.

Click

Apply

to save your configuration.

Advanced Settings

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N150 4-Port Wireless Router JNR1010

Static Routes

Static routes provide additional routing information to your router. Typically, you do not need

to add static routes. You configure static routes only for unusual cases such as multiple

routers or multiple IP subnets on your network.

As an example of when a static route is needed, consider the following case:

•

Your primary Internet access is through a cable modem to an ISP.

•

You have an ISDN router on your home network for connecting to the company where

you are employed. This router’s address on your LAN is 192.168.1.100.

•

Your company’s network address is 134.177.0.0.

When you first configured your router, two implicit static routes were created. A default route

was created with your ISP as the gateway, and a second static route was created to your

local network for all 192.168.1.x addresses. With this configuration, if you attempt to access a

device on the 134.177.0.0 network, your router forwards your request to the ISP. The ISP

forwards your request to the company where you are employed, and the request is likely to

be denied by the company’s firewall.

In this case, you must define a static route, telling your router that 134.177.0.0 should be

accessed through the ISDN router at 192.168.1.100. In this example:

•

The Destination IP Address and IP Subnet Mask fields specify that this static route

applies to all 134.177.x.x addresses.

•

The Gateway IP Address field specifies that all traffic for these addresses should be

forwarded to the ISDN router at 192.168.1.100.

•

A metric value of 1 will work because the ISDN router is on the LAN.

•

Private is selected only as a precautionary security measure in case RIP is activated.



To set up a static route:

1.

Select

Advanced > Advanced Setup > Static Routes

and click

Add

to display the

following screen:

2.

In the Route Name field, type a name for this static route (for identification purposes only).

3.

Select the

Private

check box if you want to limit access to the LAN only.

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N150 4-Port Wireless Router JNR1010

If you select the Private check box, the static route is not reported in RIP.

4.

Select the

Active

check box to make this route effective.

5.

Type the destination IP address of the final destination.

6.

Type the IP subnet mask for this destination.

If the destination is a single host, type

255.255.255.255

.

7.

Type the gateway IP address.

The gateway IP address must be a router on the same LAN segment as the N150 4-Port

Wireless Router.

8.

Type a number from 1 through 15 as the metric value.

This value represents the number of routers between your network and the destination.

Usually, a setting of 2 or 3 works, but if this is a direct connection, set it to 1.

9.

Click

Apply

to add the static route.

Remote Management

The remote management feature lets you upgrade or check the status of your N150 4-Port

Wireless Router over the Internet.



To set up remote management:

1.

Select

Advanced > Advanced Setup > Remote Management

.

Note:

Be sure to change the router’s default login password to a secure

password. The ideal password contains no dictionary words from any language

and contains uppercase and lowercase letters, numbers, and symbols. It can

be up to 30 characters.

2.

Select the

Turn Remote Management On

check box.