An IP address has a purpose, but it uses the port number to determine what the purpose is, whether using a remote desktop or using the HTTPS page. Port numbers are always associated with an IP address, and they have a unique identifier number. The router represents the phone, and the computers within the network represent different extensions or departments.
In a network, the IP address is similar to a phone number, and the port number is similar to an extension. The router will only consider the port number and send the request to the computer. The router will send or receive the request to your IP address that has been previously configured for port forwarding. In a network, your friend contacts you through an external IP address and sends a request to the router. Likewise, your network works in the same way.
The phone has done the job by redirecting your call to the sales department. The auto-attendant will ask your request and tell you to press a specific number like 100 to connect your phone to the sales department. Let’s say you call a company and want to talk to the sales department only. Your friend cannot connect to your computer if the router doesn’t know what to do with the incoming request. However, your router must be configured to know where to forward the request for port 3389. In this case, the remote desktop connection uses port numbers, such as 3389, to forward requests. The port number is a unique identifier that is used for services to exchange information.
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But through port forwarding, you specify that your PC gets traffic to certain ports of your choosing, and your Xbox gets traffic to other ports, and the list goes on.įor instance, if your friend that is not on your LAN (Local Area Network) wants to control your computer remotely, then he or she needs to create a remote desktop connection and sends the request to your computer with a specific port number. This makes your computer accessible to another computer through your network, which is being used to filter traffic to multiple devices on your network.
Port Forwarding allows computers over the internet to connect to a computer or server within a private home network. Whether you have heard about port forwarding or not, we will try to answer this question in simpler words.
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