First, I was on my RP server with some people.
Then the server started lagging bad, so I cleared bricks and to not such a surprise, someone tried to crash the server.
Then this happened,
The lag didn't stop. When I brought up the console I saw over 20 pages of him packet spamming my server
I set a password to the server, but he must've used some sort of hack or something because he was still able to connect to my server.
After a bit he gave up.