NS-WIR54GF
54M Wireless Router User Guide
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)
Note:
If you set the virtual server of service port as 80, you must set the Web management port on
Security –> Remote Management
page to be any value except 80 such as 8080. Or else there
will be a conflict to disable the virtual server.
4.7.2 Port Triggering
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. You can set up Port
Triggering on this page shown in
Figure 4-29
:
Figure 4-29 Port Triggering
Once configured, 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
.
