TP-Link TL-WR743ND Router Manual PDF (Setup & Configuration Guide)

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TL-WR743ND

150Mbps Wireless AP/Client Router

- 82 -

4.9.2

Port Triggering

Choose menu “

Forwarding

→

Port Triggering

”, and then you can view and add port triggering

in the screen as shown in Figure 4-40. 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.

Figure 4-40

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.



Trigger Port -

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

this rule.



Trigger Protocol -

The protocol used for Trigger Ports, either

TCP

,

UDP

, or

All

(all

protocols supported by the Router).



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 sections).

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

3010-3030.



Incoming Protocol -

The protocol used for Incoming Ports Range, either

TCP

or

UDP

, or

ALL

(all protocols supported by the Router).



Status -

The status of this entry, either

Enabled

or

Disabled

.

To add a new rule, follow the steps below.

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TL-WR743ND

150Mbps Wireless AP/Client Router

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1.

Click the

Add New…

button, the next screen will pop-up as shown in Figure 4-41.

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,

either

TCP

or

UDP

, or

All.

5.

Select

Enable

in

Status

field.

6.

Click the

Save

button to save the new rule.

Figure 4-41

Add or Modify a Port Triggering 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 All

button to make all entries enabled

Click the

Disable All

button to make all entries disabled.

Click the

Delete All

button to delete all entries



Note:

1.

When the trigger connection is released, the corresponding opening ports will be closed.

2.

Each rule is allowed to be used only by one host on LAN synchronously. The trigger

connection of other hosts on LAN will be refused.

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TL-WR743ND

150Mbps Wireless AP/Client Router

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3.

Incoming Port Range cannot overlap each other.

4.9.3

DMZ

Choose menu “

Forwarding

→

DMZ

”, and then you can view and configure DMZ host in the

screen as shown in Figure 4-42. The DMZ host feature allows one local host to be exposed to the

Internet for a special-purpose service such as Internet gaming or videoconferencing. DMZ host

forwards all the ports at the same time. Any PC whose port is being forwarded must have its

DHCP client function disabled and should have a new static IP Address assigned to it because its

IP Address may be changed when using the DHCP function.

Figure 4-42

DMZ

To assign a computer or server to be a DMZ server:

1.

Check the

Enable

radio button

2.

Enter the IP Address of a local host in the

DMZ Host IP Address

field

3.

Click the

Save

button.



Note:

After you set the DMZ host, the firewall related to the host will not work.

4.9.4

UPnP

Choose menu “

Forwarding

→

UPnP

”, and then you can view the information about

UPnP

(Universal Plug and Play) in the screen as shown in Figure 4-43. The UPnP feature allows the

devices, such as Internet computers, to access the local host resources or devices as needed.

UPnP devices can be automatically discovered by the UPnP service application on the LAN.

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TL-WR743ND

150Mbps Wireless AP/Client Router

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Figure 4-43 UPnP



Current UPnP Status -

UPnP can be enabled or disabled by clicking the

Enable

or

Disable

button.



Current UPnP Settings List -

This table displays the current UPnP information.



App Description -

The description provided by the application in the UPnP request.



External Port

-

The external port the Router opens for the application.



Protocol -

The type of protocol the Router opens for the application.



Internal Port

-

The Internal port the Router opens for local host.



IP Address

-

The IP address of the UPnP device that is currently accessing the Router.



Status -

The status of the port is displayed here. “Enabled” means that the port is still

active. Otherwise, the port is inactive.

Click

Refresh

to update the Current UPnP Settings List.

4.10 Security

Figure 4-44 The Security menu

There are four submenus under the Security menu as shown in Figure 4-44:

Basic Security

,

Advanced Security

,

Local Management

and

Remote Management.

Click any of them, and you

will be able to configure the corresponding function.

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TL-WR743ND

150Mbps Wireless AP/Client Router

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4.10.1 Basic Security

Choose menu “

Security

→

Basic Security

”, and then you can configure the basic security in the

screen as shown in Figure 4-45.

Figure 4-45 Basic Security



Firewall -

A firewall protects your network from the outside world. Here you can enable or

disable the Router’s firewall.



SPI Firewall -

SPI (Stateful Packet Inspection, also known as dynamic packet filtering)

helps to prevent cyber attacks by tracking more state per session. It validates that the

traffic passing through the session conforms to the protocol. SPI Firewall is enabled by

factory default. If you want all the computers on the LAN exposed to the outside world,

you can disable it.



VPN -

VPN Passthrough must be enabled if you want to allow VPN tunnels using IPSec,

PPTP, or L2TP protocols to pass through the Router’s firewall.



PPTP Passthrough -

Point-to-Point Tunneling Protocol (PPTP) allows the Point-to-Point

Protocol (PPP) to be tunneled through an IP network. To allow PPTP tunnels to pass

through the Router, keep the default,

Enabled

.

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