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Version 2.0, February 2012. Copyright
2012 Hitron Technologies
66
Version 2.0, February 2012. Copyright
2012 Hitron Technologies
66
HITRON CGN2 USER’S GUIDE
Port Range
These fields display the ports to which the rule applies:
The
Public
field displays the incoming port range.
These are the ports on which the CGN2 received
traffic from the originating host on the WAN.
The
Private
field displays the port range to which the
CGN2 forwards traffic to the device on the LAN.
Protocol
This field displays the protocol or protocols to which this
rule applies:
Transmission Control Protocol (
TCP
)
User Datagram Protocol (
UDP
)
Transmission Control Protocol and User Datagram
Protocol (
TCP/UDP
)
Generic Routing Encapsulation (
GRE
)
Encapsulating Security Protocol (
ESP
)
IP Address
This displays the IP address of the computer on the LAN
to which traffic conforming to the
Public Port Range
and
Protocol
conditions is forwarded.
Enable
Use this field to turn each port forwarding rule on or off.
Select this checkbox to enable the port forwarding
rule.
Deselect this checkbox to disable the port forwarding
rule.
Add New
Click this to define a new port forwarding rule. See
Adding or Editing a Port Forwarding Rule
on page
67
for
information on the screen that displays.
Edit
Select a port forwarding rule’s radio button (
) and
click this to make changes to the rule. See
Adding or
Editing a Port Forwarding Rule
on page
67
for
information on the screen that displays.
Delete
Select a port forwarding rule’s radio button (
) and
click this to remove the rule. The deleted rule’s
information cannot be retrieved.
Apply
Click this to save your changes to the fields in this
screen.
Table 19:
The Firewall > Forwarding Screen (continued)
Page 67 / 113
Version 2.0, February 2012. Copyright
2012 Hitron Technologies
67
Version 2.0, February 2012. Copyright
2012 Hitron Technologies
67
HITRON CGN2 USER’S GUIDE
4.4.1
ADDING OR EDITING A PORT FORWARDING RULE
To add a new port forwarding rule, click
Add
in the
Firewall
>
Forwarding
screen.
To edit an existing port forwarding rule, select the rule’s radio button (
) in the
Firewall
>
Forwarding
screen and click the
Edit
button.
NOTE:
Ensure that the
Disabled
checkbox is disabled in order to add or edit port
forwarding rules.
The following screen displays.
Figure 20:
The Firewall > Forwarding > Add/Edit Screen
Cancel
Click this to return the fields in this screen to their last-
saved values without saving your changes.
Help
Click this to see information about the fields in this
screen.
Table 19:
The Firewall > Forwarding Screen (continued)
Page 68 / 113
Version 2.0, February 2012. Copyright
2012 Hitron Technologies
68
Version 2.0, February 2012. Copyright
2012 Hitron Technologies
68
HITRON CGN2 USER’S GUIDE
The following table describes the labels in this screen.
Table 20:
The Firewall > Forwarding > Add/Edit Screen
Application Name
Enter a name for the application for which you want to
create the rule.
NOTE:
This name is arbitrary, and does not affect
functionality in any way.
Public Port Range
Use these fields to specify the incoming port range.
These are the ports on which the CGN2 received traffic
from the originating host on the WAN.
Enter the start port number in the first field, and the end
port number in the second field.
To specify only a single port, enter its number in both
fields.
Private Port Range
Use these fields to specify the ports to which the
received traffic should be forwarded.
Enter the start port number in the first field. The number
of ports must match that specified in the
Public Port
Range
, so the CGN2 completes the second field
automatically.
Protocol
Use this field to specify whether the CGN2 should
forward traffic via:
Transmission Control Protocol (
TCP
)
User Datagram Protocol (
UDP
)
Transmission Control Protocol and User Datagram
Protocol (
TCP/UDP
)
Generic Routing Encapsulation (
GRE
)
Encapsulating Security Protocol (
ESP
)
NOTE:
If in doubt, leave this field at its default (
TCP/
UDP
).
IP Address
Use this field to enter the IP address of the computer on
the LAN to which you want to forward the traffic.
Connected Computers
Click this to see a list of the computers currently
connected to the CGN2 on the LAN.
Back
Click this to return to the
Firewall
>
Forwarding
screen
without saving your changes to the port forwarding rule.
Page 69 / 113
Version 2.0, February 2012. Copyright
2012 Hitron Technologies
69
Version 2.0, February 2012. Copyright
2012 Hitron Technologies
69
HITRON CGN2 USER’S GUIDE
4.5
THE PORT TRIGGERING SCREEN
Use this screen to configure port triggering. You can turn port triggering on or off and
configure new and existing port triggering rules.
Click
Firewall
>
Port Triggering
. The following screen displays.
Figure 21:
The Firewall > Port Triggering Screen
The following table describes the labels in this screen.
Apply
Click this to save your changes to the fields in this
screen.
Cancel
Click this to return the fields in this screen to their last-
saved values without saving your changes.
Help
Click this to see information about the fields in this
screen.
Table 21:
The Firewall > Port Triggering Screen
All Port Triggering Rules
Use this field to turn port triggering on or off.
Select the checkbox to enable port triggering.
Deselect the checkbox to disable port triggering.
Select
Select a port triggering rule’s radio button (
) before
clicking
Edit
or
Delete
.
#
This displays the arbitrary identification number
assigned to the port triggering rule.
Table 20:
The Firewall > Forwarding > Add/Edit Screen
Page 70 / 113
Version 2.0, February 2012. Copyright
2012 Hitron Technologies
70
Version 2.0, February 2012. Copyright
2012 Hitron Technologies
70
HITRON CGN2 USER’S GUIDE
Application Name
This displays the arbitrary name you assigned to the
rule when you created it.
Port Range
These fields display the ports to which the rule applies:
The
Trigger
field displays the range of outgoing
ports. When the CGN2 detects activity (outgoing
traffic) on these ports from computers on the LAN, it
automatically opens the
Target
ports.
The
Target
field displays the range of triggered
ports. These ports are opened automatically when
the CGN2 detects activity on the
Trigger
ports from
computers on the LAN.
Protocol
This displays the protocol of the port triggering rule.
Timeout (ms)
This displays the time (in milliseconds) after the CGN2
opens the
Target
ports that it should close them.
Enable
Use this field to turn each port triggering rule on or off.
Select this checkbox to enable the port triggering
rule.
Deselect this checkbox to disable the port triggering
rule.
Add New
Click this to define a new port triggering rule. See
Adding or Editing a Port Triggering Rule
on page
71
for
information on the screen that displays.
Edit
Select a port triggering rule’s radio button (
) and click
this to make changes to the rule. See
Adding or Editing
a Port Triggering Rule
on page
71
for information on the
screen that displays.
Delete
Select a port triggering rule’s radio button (
) and click
this to remove the rule. The deleted rule’s information
cannot be retrieved.
Apply
Click this to save your changes to the fields in this
screen.
Cancel
Click this to return the fields in this screen to their last-
saved values without saving your changes.
Help
Click this to see information about the fields in this
screen.
Table 21:
The Firewall > Port Triggering Screen

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