TP-Link TL-MR3220 User Guide - Page 69

Port Triggering, TL-MR3220, Previous, Forwarding, Incoming Ports, Trigger Port, Trigger Protocol

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TL-MR3220 3G/3.75G Wireless Lite N Router Click the Next button to go to the next page and click the Previous button to return the previous 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 4-39). 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 4-39 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). -62-

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TL-MR3220
3G/3.75G Wireless Lite N Router
-62-
Click the
Next
button to go to the next page and click the
Previous
button to return the
previous 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 4-39). 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 4-39
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).