I am looking how to check if someone is connected to WireGuard VPN or not.
Client IPs do not show in ARP, on peers there is Current Endpoint Address but it seems it doe snot show current but last endpoint address. Last handshake is not helpful too.
I guess there is a way to find out who is connected and who is not? Except asking users or pinging.
You should know which peer got which config, no ?
In Wireguard / Peers you can see (based on last handshake) which peers are connected and which not.
Counters which are not moving or really high, are not connected.
(for me, with persistent keep-alive of 25s, those values never go much above 2 minutes for a valid connection)
Why is last handshake not helpful then ?
Current Endpoint does show the last valid endpoint address used for the last valid handshake.
Check the wireguard graphs under the interface??