TL-WR941ND
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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