TD-W9980B
N600 Wireless Dual Band Gigabit VDSL2 Modem Router (Annex B) User Guide
games, video conferencing, Internet telephoning and so on. Port Triggering is used for some of
these applications that cannot work with a pure NAT modem router.
Figure 4-74
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 4-75.
2. Select a common application from the
Common Service Port
drop-down list, then the
Trigger Port
field and the
Open Ports
field will be automatically filled. If the
Common
Service Port
does not have the application you need, enter the
Trigger Port
and the
Open
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
Open 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 4-75
Interface
: Display the default gateway you have ser in
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 modem router).
81
