Is it possible to protect against DDoS using GEOIP?

Question

linux

Good afternoon!
Is it possible to protect a server from DDoS with iptables-geoip? I have a game server, through various free panels they periodically ddos. I block absolutely everything [ iptables -I INPUT -s 0.0.0.0/0 -j DROP ] except for my IP address [ iptables -I INPUT -s 012.345.67.89 -j ACCEPT ] and I myself start ddosing to check, the channel is still clogged . Maybe I'm doing something wrong? Or is this method not to protect against DDoS'a?
If possible, I want to restrict access to the server from all countries except the Russian Federation and the CIS with GeoIP, since the bulk of the attacks come from European countries and China.
VPS, VMWare virtualization.

Answer 1

get the channel itself