C
HAPTER
4
| Configuring the Router
Forwarding
– 78 –
6.
Click the Next button to go to the next page and click the Previous
button to return the previous page.
N
OTE
:
If you set the service port of the virtual server as 80, you must set
the Web management port on “
Security –> Remote Management
” page
to be any other value except 80, such as 8080. Otherwise there will be a
conflict, which will disable the virtual server.
P
ORT
T
RIGGERING
Select
Forwarding -> Port Triggering
from the menu; you can view and
add port triggering in the next screen (shown in
). 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 a NAT Router.
Figure 64: 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.
◆
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 Router).
