You can look check the IP address within your gsc with libcod. With the mysql (included in libcod) you can maintain a online ban list.
I have included the rate limiter from io quake (same as in latest cod4 Linux binary)
https://github.com/M-itch/libcod/com...908ae4ef702581
Edit: for 2 you can try searching this forum. I think IzNoGod might have posted a way to read a player's FPS.





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