| ## Description | |
| The upnp example showcases how to use the upnp network behaviour to externally open ports on the network gateway. | |
| ## Usage | |
| To run the example, follow these steps: | |
| 1. In a terminal window, run the following command: | |
| ```sh | |
| cargo run | |
| ``` | |
| 2. This command will start the swarm and print the `NewExternalAddr` if the gateway supports `UPnP` or | |
| `GatewayNotFound` if it doesn't. | |
| ## Conclusion | |
| The upnp example demonstrates the usage of **libp2p** to externally open a port on the gateway if it | |
| supports [`UPnP`](https://en.wikipedia.org/wiki/Universal_Plug_and_Play). | |