Premier item:
log[/var/log/openvpn/latest.log,".*user.*",,,skip,,]
Deuxième item d:
log[/var/log/openvpn/latest.log,".*could not authenticate.*",,,skip,,]
nodata(/gateway.tpcontrol.lan/log[/var/log/openvpn/latest.log,".*could not authenticate.*",,,skip,,],60m)=0