How The Router Implements The Port Forwarding Rule - NETGEAR MR90 User Manual

To make a local web server public:
1. Assign your web server either a fixed IP address or a dynamic IP address using DHCP
address reservation.
In this example, your router always gives your web server an IP address of
192.168.1.33.
2. On the Port Forwarding/Port Triggering page, configure the router to forward the
HTTP service to the local address of your web server at 192.168.1.33.
HTTP (port 80) is the standard protocol for web servers.
3. (Optional) Register a host name with a Dynamic DNS service and specify that name
on the Dynamic DNS page of the router.
Dynamic DNS makes it much easier to access a server from the Internet because you
can type the name in the Internet browser. Otherwise, you must know the IP address
that the ISP assigned, which typically changes.

How the router implements the port forwarding rule

The following sequence shows the effects of a port forwarding rule:
1. When you type the URL www.example.com in your browser, the browser sends a
web page request message with the following destination information:
• Destination address. The IP address of www.example.com, which is the address
of your router.
• Destination port number. 80, which is the standard port number for a web server
process.
2. Your router receives the message and finds your port forwarding rule for incoming
port 80 traffic.
3. The router changes the destination in the message to IP address 192.168.1.33 and
sends the message to that computer.
4. Your web server at IP address 192.168.1.33 receives the request and sends a reply
message to your router.
5. Your 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.
Manage Port Forwarding and
Port Triggering
Nighthawk Tri-band Mesh WiFi 6E
143 User Manual