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300M Wireless N Router RNX-N300RT User Manual
can work with an NAT Router.
Figure 4-34 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 sections). 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 4-35.
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