may here i get some help.
looks like its a typical DDoS-Attack (Distributed Denial of Service)
i'm running an ET server since 1 year and had no problems till January 2019.
server is connecting to Australia or Saudi Arabia and causing heavy data traffic
from January 26th till 31th 4TB already.
i'm running omnibot v0.86 on it and changed nothing last year.
so i thought RtCW is almost the same game and if hackers found a back door at the game they could try on RtCW too
i also posted my issue at omnibot forum.