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Leased Time (hour):

The lease time is a time length that the IP address is assigned to each device before it is

refreshed.

Start interface ID/End interface ID:

Specify the start/end interface ID Interface ID does NOT support ZERO

COMPRESSION "::". Please enter the complete information. For exampe: Please enter "0:0:0:2" instead of

"::2".



Enable RADVD:

The RADVD (Router Advertisement Daemon) implements link-local advertisements of IPv6

router addresses and IPv6 routing prefixes using the Neighbor Discovery Protocol (NDP) and is used by system

administrators in stateless autoconfiguration methods of network hosts on Internet Protocol version 6 networks.

Check the checkbox to enable the RADVD.

Enable ULA Prefix Advertisement:

If enabled, the router will advertise ULA prefix periodically

Randomly Generate:

If selected, address prefix can be automatically generated.

Statically Configure:

If you select this option, you need to manually configure the address prefix and life

time.

Prefix:

Specify the prefix.

Preferred Life Time (hour):

Specify the preferred life time in hour.

Valid Life Time (hour):

Specify the valid life time in hour.



Enable MLD Snooping:

MLD is used by IPv6 routers for discovering multicast listeners on a directly attached link.

If disabled on layer2 devices, IPv6 multicast data packets will be broadcast on the entire layer2; if enabled, these

packets will be multicast to only specified recipient instead of being broadcast on the entire layer2.

_________________________________________________________________________________________________

Tip:

If you change the LAN IP address of the device, you will lose your connection to the device. You must type the new IP

address into your browser address field to log in to the device and set all gateway addresses of the LAN PCs to this new

address to access Internet.

Be sure to

write the new address on a sticky label and attach it to the bottom of the unit. You

will need the new address to log in to the device in the future.

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4.2.4 NAT

This section explais the following:

•

Virtual Server

•

Port Triggering

•

DMZ Host

Virtual Server

The Virtual Server is useful for web servers, ftp servers,

e-mail servers, gaming and other specialized Internet

applications. When you enable the Virtual Server,

the communication requests from the Internet to your router’s WAN

port will be forwarded to the specified LAN IP address.

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To enter the virtual server screen, click

NAT -> Virtual Server

and then click the

Add

button to add rules.



Use Interface:

Select a WAN connection to which you wish to apply the rules. When there is only one WAN

connection available, the rules will be automatically applied to it.



Service Name:

-

Select a Service option:

Allows you to select an existing service from the drop-down list.

-

Custom Service:

Allows you to customize a service.



Server IP Address:

Enter the IP address of your local computer that will provide this service.



External Starting Port and External Ending Port:

These are the starting number and ending number for the

public ports at the Internet interface.



Protocol:

Select the protocol from the Protocol drop-down list. If you are unsure, select TCP/UDP.



Internal Starting Port and Internal Ending Port:

These are the starting number and ending number for the ports

of

a computer on the router’s local area network (LAN).

_________________________________________________________________________________________________

Note:

If you have enabled the UPnP functionality on both the router and your PC that is attached to one of the LAN port on the

router, you will be prompted on the Virtual Server page that the UPnP interface is being used.

_________________________________________________________________________________________________

Application Example:

You have set up two servers on your LAN side:

- An FTP server (using the default port number of 21) at the IP address of 192.168.1.100

- A web server (using the default port number of 80) at the IP address of 192.168.1.110

And want your friends on Internet to access the FTP server and web server on default ports. To access your FTP or web

server from the Internet, a remote user has to know the Internet IP address or Internet name of your router, such as

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www.tendacn.com. In this example, we assume the Internet IP address of your router is 183.37.227.201. Then follow

instructions below:

To configure the router to make your local FTP server public:

1.

Click

NAT -> Virtual Server

to enter it and then click the

Add

button.

2.

- Select FTP that you wish to host on your network from the

Select a Service

drop-down list. The port number (21)

used by this service will then be automatically populated.

- Or if you wish to define the service yourself, enter a descriptive name in the

Custom Service,

say My FTP,

and

then manully enter the port number (21) used by this service in the

Internal Starting Port, Internal Ending Port,

External Starting Port and External Ending Port fields

.

3.

Select a protocol from the

Protocol

drop-down list. If you are unsure, select

TCP/UDP

.

4.

In the

Server IP Address

field, enter the last digit of the IP address of your local computer that offers this service.

Here in this example, we enter 192.168.1.100.

5.

Click the

Apply/Save

button.

6.

Your friends on Internet will then be able to access your FTP server simply by entering "ftp://183.37.227.201" in his

browser.

To configure your router to make your local web server public:

1.

Click

NAT -> Virtual Server

to enter it and then click the

Add

button.

2.

- Select

Web Server (HTTP)

that you wish to host on your network from the

Select a Service

drop-down list. The

port number (80) used by this service will then be automatically populated.

- Or if you wish to define the service yourself, enter a descriptive name in the

Custom Service,

say My Web Server

(HTTP),

and then manully enter the port number (80) used by this service in the

Internal Starting Port, Internal

Ending Port, External Starting Port and External Ending Port fields

.

3.

Select a protocol from the

Protocol

drop-down list. If you are unsure, select

TCP/UDP

.

4.

In the

Server IP Address

field, enter the last digit of the IP address of your local computer that offers this service.

Here in this example, we enter 192.168.1.110.

5.

Click the

Apply/Save

button.

6.

Now you can view your configurations as seen in the screenshot below. Your friends on Internet will then be able to

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access the web server simply by entering "http://183.37.227.201" in his browser.

_________________________________________________________________________________________________

Note:

The "Internal Port End" cannot be modified directly. Normally, it is set to the same value as "External Port End".

However, if you modify "Internal Port Start", then "Internal Port End" will be set to the same value as "Internal Port

Start".

Tip:

If the service or game you wish to host on your network is not included in the list, manually add it in the Custom Service

field and then add the port number used by it to the

Internal Starting Port, Internal Ending Port, External Starting

Port and External Ending Port fields

.

_________________________________________________________________________________________________

Port Triggering

Some applications such as games, video conferencing, remote access applications and others require that specific ports in

the Router's firewall be opened for access by the applications. Port Trigger dynamically opens up the 'Open Ports' in the

firewall when an application on the LAN initiates a TCP/UDP connection to a remote party using the 'Triggering Ports'.

The Router allows the remote party from the WAN side to establish new connections back to the application on the LAN

side using the 'Open Ports'.

To enter the Port Triggering screen, click

NAT -> Port Triggering

and then click the

Add

button to add rules.

You can configure the port settings from this screen by selecting an existing application or creating your own (Custom

application) and click "Save/Apply" to add it.

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

Use Interface:

Select a WAN connection to which you wish to apply the rules. When there is only one WAN

connection available, the rules will be automatically applied to it.



Application Name:

Two options are available:

- Select an application

- Custom application



Trigger Port Start/Trigger Port End:

The port range for an application to initiate connections.



Trigger Protocol:

Select the protocol from the drop-down list. If you are unsure, select TCP/UDP.



Open Port Start/ Open Port End:

These are the starting number and ending number for the ports that will be

automatically opened by the built-in firewall when connections initiated by an application are established.

DMZ Host

The default DMZ (De-Militarized Zone) host feature is helpful when you are using some online games and

videoconferencing applications that are not compatible with NAT (Network Address Translation).

DMZ Host IP Address:

The IP Address of the device for which the router’s firewall will be disabled. Be sure to assign a

static IP Address to that device. The DMZ host should be connected to a LAN port of the device. Be sure to assign a

static IP address to that DMZ host.