Just to clear out a few inconsistencies...
BotoX wrote:Raw udp packets with the connect and disconnect packet. Very easy to send but also illegal. Or he is just reconnecting where changing the connection port is normal.
It's not 'illegal', but it's strongly discouraged and goes without saying that one shouldn't examine such activities.
Alucard wrote:creating a tw based ID, for example ingame account would solve such jerks
There are plans on making account systems, but accounts will never ever be required to play, meaning that won't solve anything.
HeroiAmarelo wrote:Dune wrote:Just ban his IP?
If he rejoins, maybi he use fake IPs.
That way he can rejoin because he is never banned!
(I think that I'm right...)
He maybi use some software like UltraSurf or other that fakes the IP...
UltraSurf and similar software do not work with Teeworlds. I also highly doubt the IP changed at all.