Vpnc disconnection log

Hello everyone,
I successfully connected to a cisco asa using vpnc.
I left the tunnel open all night and expected it to be up and running in the morning.
In the morning the tunnel was closed.
Is there a way to see such events, vpnc disconnections, in a log somewhere?
I’d like to troubleshoot and understand what happened.

journalctl | grep vpnc
is showing nothing during the night, that’s why I’m asking if there is somewhere in opensuse where I can find that information.