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Page 71 / 124 Scroll up to view Page 66 - 70
TL-WR1043ND
Wireless N Gigabit Router
-62-
Figure 4-49
Add or Modify a Triggering Entry
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 Port
- 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 which
triggered this rule. You can input at most 5 groups of ports (or port sections). Every group of
ports must be separated with ",", for example, 2000-2038, 2046, 2050-2051, 2085,
3010-3030.
¾
Incoming Protocol
- The protocol used for
Incoming Port
, either
TCP
,
UDP
, or
ALL
(all
protocols supported by the Router).
¾
Status
- The status of this entry, Enabled means the Port Triggering entry is enabled.
¾
Modify
- To modify or delete an existing entry.
¾
Common Applications
- Some popular applications already listed in the drop-down list of
Incoming Protocol
.
To modify or delete an existing entry:
1.
Find the desired entry in the table.
2.
Click
Modify
or
Delete
as desired on the
Modify
column.
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
Once the Router is configured, the operation is as follows:
1.
A local host makes an outgoing connection to an external host using a destination port
number defined in the
Trigger Port
field.
Page 72 / 124
TL-WR1043ND
Wireless N Gigabit Router
-63-
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.
)
Note:
1.
When the trigger connection is released, the corresponding opened ports will be closed.
2.
Each rule can only be used by one host on the LAN at a time. The trigger connection of other
hosts on the LAN will be refused.
3.
Incoming Ports
ranges cannot overlap each other.
4.9.3
DMZ
Choose menu “
Forwarding
→
DMZ
”, and then you can view and configure DMZ host in the screen
(shown in
Figure 4-50
).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. The Router forwards
packets of all services to the DMZ host. 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 4-50
DMZ
To assign a computer or server to be a DMZ server:
1. Click the
Enable
button.
2.
Enter the IP address of a local PC that is set to be DMZ host in the
DMZ Host IP Address
field.
3. Click the
Save
button.
4.9.4
UPnP
Choose menu “
Forwarding
→
UPnP
”, and then you can view the information about
UPnP
in the
screen (shown in
Figure 4-51
). The
Universal Plug and Play (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.
Page 73 / 124
TL-WR1043ND
Wireless N Gigabit Router
-64-
Figure 4-51
UPnP Setting
¾
Current UPnP Status -
UPnP can be enabled or disabled by clicking the
Enable
or
Disable
button. This feature is enabled by default.
¾
Current UPnP Settings List -
This table displays the current UPnP information.
•
App Description
- The description about the application which initiates the UPnP
request.
•
External Port
- The port which the Router opened for the application.
•
Protocol
- The type of protocol which is opened.
•
Internal Port
- The port which the Router opened for local host.
•
IP Address
- The IP address of the local host which initiates the UPnP request.
•
Status
- Either Enabled or Disabled. "Enabled" means that the port is still active;
otherwise, the port is inactive.
Click the
Enable
button to enable UPnP.
Click the
Disable
button to disable UPnP.
Click the
Refresh
button to update the Current UPnP Settings List.
Page 74 / 124
TL-WR1043ND
Wireless N Gigabit Router
-65-
4.10 Security
Figure 4-52
The Security menu
There are four submenus under the Security menu as shown in Figure 4-52:
Basic Security
,
Advanced Security
,
Local Management
and
Remote Management.
Click any of them, and you
will be able to configure the corresponding function.
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 4-53.
Figure 4-53
Basic Security
¾
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.
Page 75 / 124
TL-WR1043ND
Wireless N Gigabit Router
-66-
¾
VPN -
VPN Passthrough must be enabled if you want to allow VPN tunnels using VPN
protocols to pass through the Router.
•
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, click
Enable
.
•
L2TP Passthrough
- Layer Two Tunneling Protocol (L2TP) is the method used to
enable Point-to-Point sessions via the Internet on the Layer Two level. To allow L2TP
tunnels to pass through the Router, click
Enable
.
•
IPSec Passthrough
- Internet Protocol security (IPSec) is a suite of protocols for
ensuring private, secure communications over Internet Protocol (IP) networks, through
the use of cryptographic security services. To allow IPSec tunnels to pass through the
Router, click
Enable
.
¾
ALG -
It is recommended to enable Application Layer Gateway (ALG) because ALG allows
customized Network Address Translation (NAT) traversal filters to be plugged into the
gateway to support address and port translation for certain application layer "control/data"
protocols such as FTP, TFTP, H323 etc.
•
FTP ALG
- To allow FTP clients and servers to transfer data across NAT, click
Enable
.
•
TFTP ALG
- To allow TFTP clients and servers to transfer data across NAT, click
Enable
.
•
H323 ALG
- To allow Microsoft NetMeeting clients to communicate across NAT, click
Enable
.
•
RTSP ALG
- To allow some media player clients to communicate with some streaming
media servers across NAT, click
Enable
.
Click the
Save
button to save your settings.
4.10.2 Advanced Security
Choose menu “
Security
→
Advanced Security
”, and then you can protect the Router from
being attacked by TCP-SYN Flood, UDP Flood and ICMP-Flood in the screen as shown in
Figure
4-54
.

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