The router has UPnP. What is it and what is it for?

The router has UPnP. What is it and what is it for?

What is UPnP?

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answers (3)

Answer 1
August, 2021

This is a set of protocols that help network devices to automatically connect and communicate with each other.

UPnP is actively used by ISPs to automatically configure your router. There are cases when erroneous decisions made by the provider in the configuration cut the Internet for their clients with UPnP enabled.

In addition, UPnP opens the door to your router for hackers. this service does not use login and password authorization. Thus, the villains can connect to your router and make their own settings, gaining access to your local network.

Answer 2
August, 2021

UPnP is a function on the router that accepts requests from applications on client devices to perform port forwarding.

Port is a conditional identifier by which the system understands which application the data is intended.

Some programs need to be able to accept incoming connections to ensure that certain functionality works. For example, if a game server is running on your computer, other players will not be able to connect to it unless "port forwarding" is done. Port forwarding adds a rule on the router that, when data arrives at a certain port, it transfers it to another device, where the program that listens to its port already receives it.

If the port is not forwarded, the data will go to the router, which has there is no corresponding service, and it will simply delete such data, and will not pass it on.

Answer 3
August, 2021

UPnP is an extension, with the help of which a program on a PC can submit a request to a router, and then redirect the port to itself. Simply put, this is a protocol that allows programs and other devices on the network to give access or close ports for connection. With it, ports are automatically redirected.

Enabling UPnP is necessary if you want to connect the set-top box to online games, organize video surveillance from a distance. connection of smart locks, etc. You can read more in this article.

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