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Page 286 / 312 Scroll up to view Page 281 - 285
Description
Field
•
Any
. This is the default setting and allows any computer on the
Internet to use this service.
•
Single address
. Restricts the service to a particular computer.
Select the protocol (
TCP
or
UDP
) that is associated with the service or
application.
Service Type
Enter the number of the outbound traffic port that must open the inbound
ports.
Triggering Port
Required Inbound Connection
Select the protocol (
TCP
or
UDP
) that is associated with the inbound
connection.
Service Type
If you are unsure, select
TCP/UDP
.
Enter the start port number for the inbound connection.
Starting Port
Enter the end port number for the inbound connection.
Ending Port
9.
Click the
Apply
button.
Your settings are saved and the rule is added to the Port Triggering Portmap Table on the Port
Forwarding / Port Triggering page.
Change a Port Triggering Rule
You can change an existing port triggering rule.
To change a port triggering rule:
1.
Launch an Internet browser from a computer or WiFi device that is connected to the network.
2.
Type
.
A login window opens.
3.
Enter the user name and password for the
modem router
.
The user name is
admin
. The default password is
password
. The user name and password are
case-sensitive.
4.
Click the
OK
button.
Manage Port Forwarding and Port Triggering
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Nighthawk AC1900 WiFi VDSL/ADSL Modem Router Model D7000
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The BASIC Home page displays.
5.
Select
ADVANCED > Advanced Setup > Port Forwarding / Port Triggering
.
The Port Forwarding / Port Triggering page displays.
6.
Select the
Port Triggering
radio button.
The previous figure shows two port triggering rules.
7.
In the Port Triggering Portmap Table, select the radio button next to the service or application name.
8.
Click the
Edit Service
button.
The Port Triggering - Services page displays.
9.
Change the settings.
For more information about the settings, see
Add a Port Triggering Rule
on page 284.
10.
Click the
Apply
button.
Your settings are saved. The changed rule displays in the Port Triggering Portmap Table on the Port
Forwarding / Port Triggering page.
Remove a Port Triggering Rule
You can remove a port triggering rule that you no longer need.
To remove a port triggering rule:
1.
Launch an Internet browser from a computer or WiFi device that is connected to the network.
2.
Type
.
Manage Port Forwarding and Port Triggering
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Nighthawk AC1900 WiFi VDSL/ADSL Modem Router Model D7000
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A login window opens.
3.
Enter the user name and password for the
modem router
.
The user name is
admin
. The default password is
password
. The user name and password are
case-sensitive.
4.
Click the
OK
button.
The BASIC Home page displays.
5.
Select
ADVANCED > Advanced Setup > Port Forwarding / Port Triggering
.
The Port Forwarding / Port Triggering page displays.
6.
Select the
Port Triggering
radio button.
The previous figure shows two port triggering rules.
7.
In the Port Triggering Portmap Table, select the radio button next to the service or application name.
8.
Click the
Delete Service
button.
The rule is removed from the Port Triggering Portmap Table.
Specify the Time-Out for Port Triggering
The time-out period for port triggering controls how long the inbound ports stay open when the
modem
router
detects no activity. A time-out period is required because the
modem router
cannot detect when
the service or application terminates.
Manage Port Forwarding and Port Triggering
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Nighthawk AC1900 WiFi VDSL/ADSL Modem Router Model D7000
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To specify the time-out for port triggering:
1.
Launch an Internet browser from a computer or WiFi device that is connected to the network.
2.
Type
.
A login window opens.
3.
Enter the user name and password for the
modem router
.
The user name is
admin
. The default password is
password
. The user name and password are
case-sensitive.
4.
Click the
OK
button.
The BASIC Home page displays.
5.
Select
ADVANCED > Advanced Setup > Port Forwarding / Port Triggering
.
The Port Forwarding / Port Triggering page displays.
6.
Select the
Port Triggering
radio button.
The port triggering settings display.
7.
In the
Port Triggering Time-out
field, enter a value up to 9999 minutes.
The default setting is 20 minutes.
8.
Click the
Apply
button.
Your settings are saved.
Disable Port Triggering
By default, port triggering is enabled.You can disable port triggering temporarily without removing any
port triggering rules.
To disable port triggering:
1.
Launch an Internet browser from a computer or WiFi device that is connected to the network.
2.
Type
.
A login window opens.
3.
Enter the user name and password for the
modem router
.
The user name is
admin
. The default password is
password
. The user name and password are
case-sensitive.
4.
Click the
OK
button.
Manage Port Forwarding and Port Triggering
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The BASIC Home page displays.
5.
Select
ADVANCED > Advanced Setup > Port Forwarding / Port Triggering
.
The Port Forwarding / Port Triggering page displays.
6.
Select the
Port Triggering
radio button.
The port triggering settings display.
7.
Select the
Disable Port Triggering
check box.
If this check box is selected, the
modem router
does not apply port triggering rules even if you specified
them.
8.
Click the
Apply
button.
Your settings are saved.
Application Example: Port Triggering for Internet Relay Chat
Some application servers, such as FTP and IRC servers, send replies to multiple port numbers. Using
port triggering, you can tell the
modem router
to open more incoming ports when a particular outgoing
port starts a session.
An example is Internet Relay Chat (IRC).Your computer connects to an IRC server at destination port
6667.The IRC server not only responds to your originating source port but also sends an “identify” message
to your computer on port 113. Using port triggering, you can tell the
modem router
, “When you initiate a
session with destination port 6667, you must also allow incoming traffic on port 113 to reach the originating
computer.”
The following sequence shows the effects of this port triggering rule:
1.
You open an IRC client program to start a chat session on your computer.
2.
Your IRC client composes a request message to an IRC server using a destination port number of
6667, the standard port number for an IRC server process.Your computer then sends this request
message to your
modem router
.
3.
Your
modem router
creates an entry in its internal session table describing this communication session
between your computer and the IRC server.Your
modem router
stores the original information,
performs Network Address Translation (NAT) on the source address and port, and sends this request
message through the Internet to the IRC server.
4.
Noting your port triggering rule and observing the destination port number of 6667, your
modem router
creates another session entry to send any incoming port 113 traffic to your computer.
5.
The IRC server sends a return message to your
modem router
using the NAT-assigned source port
(for example, port 33333) as the destination port and also sends an “identify” message to your
modem
router
with destination port 113.
6.
When your
modem router
receives the incoming message to destination port 33333, it checks its
session table to see if a session is active for port number 33333. Finding an active session, the
modem
Manage Port Forwarding and Port Triggering
290
Nighthawk AC1900 WiFi VDSL/ADSL Modem Router Model D7000

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