[JaKe Elite]

There is a way to do it, Which will involve with listing all the banned IPs (every banned players gets their IP added on the banned IPs txt file) Once you decided to unban them, You can remove the banned ip from the file (I dont know how to do it, But it's possible) I prefer using Range Banning (which involves banning the starting IP instead of the whole IP, this prevents the user from changing IP)