How can I test whether the VPN connection is working?

    For example you can visit a website from outside with an active VPN connection (with the tunnel profile "Full Tunnel"), which shows your own IP address. If the displayed IP address starts with 131.246. or 2001:638:208: you use the VPN connection.
    Such test sites are e.g.:
    Published:
    How many connections can I establish with my account?
    I cannot connect via remote desktop or to a network drive of the university via Wireguard.