OpenVPN related log entry,should I be concerned?

[Khadanja]

Feb 19 22:05:17 ovpn-server1[1314]: 185.200.118.78 TLS: Initial packet from [AF_INET6]::ffff:185.200.118.78:57870, sid=12121212 12121212
Feb 19 22:06:17 ovpn-server1[1314]: 185.200.118.78 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)
Feb 19 22:06:17 ovpn-server1[1314]: 185.200.118.78 TLS Error: TLS handshake failed
Feb 19 22:06:17 ovpn-server1[1314]: 185.200.118.78 SIGUSR1[soft,tls-error] received, client-instance restarting

Does this mean someone from IP 185.200.118.78 tried to connect? How can they know the DDNS name or my WAN IP?

 

[martinr]

Feb 19 22:05:17 ovpn-server1[1314]: 185.200.118.78 TLS: Initial packet from [AF_INET6]::ffff:185.200.118.78:57870, sid=12121212 12121212
Feb 19 22:06:17 ovpn-server1[1314]: 185.200.118.78 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)
Feb 19 22:06:17 ovpn-server1[1314]: 185.200.118.78 TLS Error: TLS handshake failed
Feb 19 22:06:17 ovpn-server1[1314]: 185.200.118.78 SIGUSR1[soft,tls-error] received, client-instance restarting

Does this mean someone from IP 185.200.118.78 tried to connect? How can they know the DDNS name or my WAN IP?

They don’t know your DDNS or WAN IP address. They’re randomly scanning looking for ports that are listening. When they find one, they try and connect, and when it fails, they move one somewhere else. So you shouldn’t be concerned at all, unless they do manage to connect