TP-Link TL-WR541G Router Manual PDF (Setup & Configuration Guide)

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39

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

attached devices, click on the

Refresh

button.

4.6.3 Address Reservation

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 servers that require permanent IP settings. This page is used for address

reservation (shown in

Figure 4-24

).

Figure 4-24

Address Reservation

¾

MAC Address -

The MAC address of the PC of 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 4-25)

2.

Enter the MAC address (The format for the MAC Address is XX-XX-XX-XX-XX-XX.) and IP

address in dotted-decimal notation of the computer you wish to add.

3.

Click the

Save

button when finished.

Figure 4-25

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

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40

Delete

.

2.

Modify the information.

3.

Click the

Save

button.

Click the

Enable All

button to make all entries enabled

Click the

Disabled All

button to make all entries disabled.

Click the

Delete All

button to delete all entries

Click the

page.

)

Note:

The function won’t take effect until the router reboots.

4.7 Forwarding

Figure 4-26 The Forwarding menu

There are four submenus under the Forwarding menu (shown in Figure 4-26):

Virtual Servers

,

Port Triggering

,

DMZ

and

UPnP

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

corresponding function. The detailed explanations for each submenu are provided below.

4.7.1 Virtual Servers

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 change

when using the DHCP function. You can set up virtual servers on this page, shown in

Figure 4-27

:

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41

Figure 4-27

Virtual Servers

¾

Service Port -

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

service ports (the format is XXX – YYY, XXX is the start port, YYY is the end port).

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 setup a virtual server entry:

1.

Click the

Add New button

. (pop-up Figure 4-28)

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

Server IP Address

box.

4.

Select the protocol used for this application, either

TCP

or

UDP

, or

All

.

5.

Select the

Enable

checkbox to enable the virtual server.

6.

Click the

Save

button.

Figure 4-28

Add or Modify a Virtual Server Entry

)

Note:

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42

It is possible that you have a computer or server that has more than one type of available service.

If so, 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 All

button to make all entries enabled

Click the

Disabled All

button to make all entries disabled.

Click the

Delete All

button to delete all entries

Click the

page.

)

Note:

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

Security –> Remote Management

page to be any value except 80 such as 8080. Or else there

will be a conflict to disable the virtual server.

4.7.2 Port Triggering

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. You can set up Port

Triggering on this page shown in

Figure 4-29

:

Figure 4-29

Port Triggering

Once configured, operation is as follows:

1.

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

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43

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, enter the following data on the

Port Triggering

screen.

1.

Click the

Add New button

. (pop-up Figure 4-30)

2.

Enter a port number used by the application when it generates an outgoing request.

3.

Select the protocol used for

Trigger Port

from the pull-down list, either

TCP

,

UDP

, or

All.

4.

Enter the range of port numbers used by the remote system when it responds to the PC's

request.

5.

Select the protocol used for

Incoming Ports Range

from the pull-down list, either

TCP

or

UDP

, or

All.

6.

Select the

Enable

checkbox to enable.

7.

Click the

Save

button to save the new rule.

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