TP-Link TL-WR940N Router Manual PDF (Setup & Configuration Guide)

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TL-WR940N

Wireless N Router

4.7.2 DHCP Clients List

Choose menu “

DHCP

→

DHCP Clients List

”, you can view the information about the clients

attached to the Router in the next screen (shown in

Figure 4-26)

.

Figure 4-26

DHCP Clients List

¾

ID -

The index of the DHCP Client

¾

Client Name

-

The name of the DHCP client

¾

MAC Address

-

The MAC address of the DHCP client

¾

Assigned IP

-

The IP address that the Router has allocated to the DHCP client.

¾

Lease Time

-

The time of the DHCP client leased. After the dynamic IP address has expired,

a new dynamic IP address will be automatically assigned to the user.

You cannot change any of the values on this page. To update this page and to show the current

attached devices, click the

Refresh

button.

4.7.3 Address Reservation

Choose menu “

DHCP

→

Address Reservation

”, you can view and add a reserved addresses for

clients via the next screen (shown in

Figure 4-27

).When you specify a reserved IP address for a

PC on the LAN, that PC will always receive the same IP address each time when it accesses the

DHCP server. Reserved IP addresses should be assigned to the servers that require permanent

IP settings.

Figure 4-27

Address Reservation

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TL-WR940N

Wireless N Router

¾

MAC Address -

The MAC address of the PC for which you want to reserve IP address.

¾

Assigned IP Address -

The IP address of the Router reserved.

¾

Status

-

The status of this entry either

Enabled

or

Disabled

.

To Reserve IP addresses:

1.

Click the

Add New …

button. (Pop-up

Figure 4-28

)

2.

Enter the MAC address (in XX-XX-XX-XX-XX-XX format.) and IP address in dotted-decimal

notation of the computer you wish to add.

3.

Click the

Save

button when finished.

Figure 4-28

Add or Modify an Address Reservation Entry

To modify or delete an existing entry:

1.

Click the

Modify

in the entry you want to modify. If you want to delete the entry, click the

Delete

.

2.

Modify the information.

3.

Click the

Save

button.

Click the

Enable/ Disabled All

button to make all entries enabled/disabled

Click the

Delete All

button to delete all entries

Click the

page.

4.8 Forwarding

Figure 4-29 The Forwarding menu

There are four submenus under the Forwarding menu (shown in

Figure 4-29

):

Virtual Servers

,

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TL-WR940N

Wireless N Router

Port Triggering

,

DMZ

and

UPnP

. Click any of them, and you will be able to configure the

corresponding function.

4.8.1 Virtual Servers

Choose menu “

Forwarding

→

Virtual Servers

”, you can view and add virtual servers in the next

screen (shown in

Figure 4-30

). Virtual servers can be used for setting up public services on your

LAN, such as DNS, Email and FTP. A virtual server is defined as a service port, and all requests

from the Internet to this service port will be redirected to the computer specified by the server IP.

Any PC that was used for a virtual server must have a static or reserved IP Address because its

IP Address may be changed when using the DHCP function.

Figure 4-30

Virtual Servers

¾

Service Port -

The numbers of External Ports. You can type a service port or a range of

service ports (in XXX – YYY format, XXX is the start port number, YYY is the end port

number).

¾

IP Address -

The IP Address of the PC providing the service application.

¾

Protocol -

The protocol used for this application, either

TCP

,

UDP

, or

All

(all protocols

supported by the Router).

¾

Status -

The status of this entry either

Enabled

or

Disabled

.

To set up a virtual server entry:

1.

Click the

Add New…

button. (pop-up

Figure 4-31

)

2.

Select the service you want to use from the Common Service Port list. If the

Common

Service Port

list does not have the service that you want to use, type the number of the

service port or service port range in the

Service Port

box.

3.

Type the IP Address of the computer in the

IP Address

box.

4.

Select the protocol used for this application, either

TCP

or

UDP

, or

All

.

5.

Select the

Enable

check box to enable the virtual server.

6.

Click the

Save

button.

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TL-WR940N

Wireless N Router

Figure 4-31

Add or Modify a Virtual Server Entry

)

Note:

If your computer or server has more than one type of available service, please select another

service, and enter the same IP Address for that computer or server.

To modify or delete an existing entry:

1.

Click the

Modify

in the entry you want to modify. If you want to delete the entry, click the

Delete

.

2.

Modify the information.

3.

Click the

Save

button.

Click the

Enable/ Disabled All

button to make all entries enabled/ disabled.

Click the

Delete All

button to delete all entries.

Click the

page.

)

Note:

If you set the service port of the virtual server as 80, you must set the Web management port on

System Tools –> Remote Management

page to be any other value except 80 such as 8080.

Otherwise there will be a conflict to disable the virtual server.

4.8.2 Port Triggering

Choose menu “

Forwarding

→

Port Triggering

”, you can view and add port triggering in the next

screen (shown in

Figure 4-32

). Some applications require multiple connections, like Internet

games, video conferencing, Internet calling and so on. These applications cannot work with a

pure NAT Router. Port Triggering is used for some of these applications that can work with an NAT

Router.

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TL-WR940N

Wireless N Router

Figure 4-32

Port Triggering

Once the Router is configured, the operation is as follows:

1.

A local host makes an outgoing connection using a destination port number defined in the

Trigger Port field.

2.

The Router records this connection, opens the incoming port or ports associated with this

entry in the Port Triggering table, and associates them with the local host.

3.

When necessary the external host will be able to connect to the local host using one of the

ports defined in the

Incoming Ports

field.

¾

Trigger Port -

The port for outgoing traffic. An outgoing connection using this port will

"Trigger" this rule.

¾

Trigger Protocol -

The protocol used for Trigger Ports, either

TCP

,

UDP

, or

All

(all

protocols supported by the Router).

¾

Incoming Ports Range -

The port or port range used by the remote system when it

responds to the outgoing request. A response using one of these ports will be forwarded to

the PC that triggered this rule. You can input at most 5 groups of ports (or port section).

Every group of ports must be set apart with ",". For example, 2000-2038, 2050-2051, 2085,

3010-3030.

¾

Incoming Protocol -

The protocol used for Incoming Ports Range, either

TCP

or

UDP,

or

ALL

(all protocols supported by the Router).

¾

Status -

The status of this entry either

Enabled

or

Disabled

.

To add a new rule, follow the steps below.

1.

Click the

Add New…

button, the next screen will pop-up as shown in Figure 4-33.

2.

Select a common application from the

Common Applications

drop-down list, then the

Trigger Port

field and the

Incoming Ports

field will be automatically filled. If the

Common

Applications

do not have the application you need, enter the

Trigger Port

and the

Incoming Ports

manually.

3.

Select the protocol used for Trigger Port from the

Trigger Protocol

drop-down list, either

TCP

,

UDP

, or

All

.

4.

Select the protocol used for Incoming Ports from the

Incoming Protocol

drop-down list,

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