4. Your web server at IP address 192.168.1.123 receives the request and sends a reply message to your
modem router.
5. Your modem router performs Network Address Translation (NAT) on the source IP address and sends
the reply through the Internet to the computer or WiFi device that sent the web page request.
Port Triggering
Port triggering is a dynamic extension of port forwarding that is useful in these cases:
• An application must use port forwarding to more than one local computer (but not simultaneously).
• An application must open incoming ports that are different from the outgoing port.
With port triggering, the router monitors traffic to the Internet from an outbound “trigger” port that you specify.
For outbound traffic from that port, the router saves the IP address of the computer that sent the traffic.The
modem router temporarily opens the incoming port or ports that you specify in your rule and forwards that
incoming traffic to that destination.
Port forwarding creates a static mapping of a port number or range of ports to a single local computer. Port
triggering can dynamically open ports to any computer when needed and close the ports when they are no
longer needed.
If you use applications such as multiplayer gaming, peer-to-peer connections, real-time
communications such as instant messaging, or remote assistance (a feature in Windows
XP), enable Universal Plug and Play (UPnP). See Improve Network Connections With
Universal Plug and Play on page 85.
Note
Add a Port Triggering Service
To add a port triggering service:
1. Launch a web browser from a computer or mobile device that is connected to the network.
2. Enter http://www.routerlogin.net.
A login window opens.
3. Enter the modem router user name and password.
The user name is admin.The default password is password. The user name and password are
case-sensitive.
The BASIC Home page displays.
4. Select ADVANCED > Advanced Setup > Port Forwarding/Port Triggering.
The Port Forwarding/Port Triggering page displays.
5. Select the Port Triggering radio button.
Customize Internet Traffic Rules for Ports
149
Nighthawk AC1900 WiFi LTE Modem Router
To Next Page
Loading...
