So I have a situation that I cannot control. I have 3 people(they are friends) that have been joining my server a lot lately. As such, some fishy things have been happening. At one point with 1 of the 3 was on, I just said striaght up, look, your pal is using scripts, not sure if you know this but they have popped up, and beyond that, I have seen him logging in on multiple GUIDs. He softly denies this and continues playing. A short time after he asks me to join their teamspeak because the 'suspected' friend had just logged in. After joining, the culprate immedately admits to using scripts and hacks. Spawning weapons, vehicles, telporting, going invis, refueling/fixing vehicles... The kicker is, he says he buys these GUIDs from a guy that somehow aquires them from "youtube" through a banner/program/ad type of thing(in his words). He has 20+GUIDs and he admited to me that there is nothing I could do to stop him because he can just change his GUID at the drop of a dime. A few times i seen him join and immediately was kicked with a message saying the GUID was banned or bad. With that said, he told me he wouldn't drop any bombs on people, or teleport them out to kill them. Instead he only will use them to "help his friends" by spawning guns and other items. At one point he even joined the server, popped in a few meters behind me, and said "hey, your only 50 meters from me!" then giggled. For now, i have covered up his info until i know something can be done, otherwise he might some how get bothered/harassed and trace it back to me... I do not need my server or myself becoming a victim of countless attacks, I just want him banned, can i IP ban?? and how, he seems to change his PORT often, but IP the same. I'm not a computer/network guy, I just play games so im hoping for some good advice.