Error log indicates:
Attempted to fake being google. Failed PTR lookup:
2019-10-20 15:14:02.334614 [NOTICE] [1035887] [[##REMOVEDIP##] Brute force detected for IP [##REMOVEDIP##], throttle.
2019-10-20 15:14:06.042180 [INFO] [1035887] [##REMOVEDIP##] ExtConn timed out while connecting.
2019-10-20 15:14:06.042258 [INFO] [1035887] [[##REMOVEDIP##] connection to [webadmin.##REMOVEDDOMAIN##.com:##REMOVEDPORT##] on request #1, confirmed, 0, associated process: 0, running: 0, error: Connection timed out!
2019-10-20 15:14:06.042265 [NOTICE] [1035887] [##REMOVEDIP##] Suspicious request timeout, associated process: 0, running: 0.