***If your router doesn't have Universal Plug and Play (UPnP) enabled, you'll need to manually set up port forwarding rules for each connection.

 If your router doesn't have Universal Plug and Play (UPnP) enabled, you'll need to manually set up port forwarding rules for each connection. This can be more time-consuming and require technical knowledge, but there are online tutorials to help.
UPnP is a protocol that allows devices to automatically find and request ports on a router. While it can be useful for some applications, it's generally considered best practice to disable UPnP because it can create vulnerabilities in your router's firewall. If a device is compromised, your router could be open to attack.
If you do need to forward ports, you can use alternatives like PCP or NAT-PMP, which are simpler and more lightweight protocols.
To enable UPnP on your router, you can:

    Log in as an admin
    Go to your router's web interface
    Look in Advanced, Admin, or Network settings

Most routers have UPnP turned on by default.