I may not understand how DDoS attacks work at this point, but Im just wondering

Question

I may not understand how DDoS attacks work at this point, but Im just wondering if this would work for a game server?

IF each time a new connection is attempted and the packet or connection type is not similar to that of a normal player, then block the connection?

I dont see any reason for the server to allow connections that are not needed to play the game. Only 1 port would be open. The only downside I see is that the CPU would be put under a lot of stress with large attacks.

But for the most part, wouldn't this work well?

I may be completely wrong and off-base, so i'm just posting here to find out.

Explanation / Answer

DDOS attacks are not just against the Server resources they are against bandwidth too. The most recent attacks had bandwidth consumption of up to 1 Tbps.

Blocking IP's is not going to help as the firewall still has to drop large amount of packets/connections from multiple sources and within a short amount of time the server runs out of it's allocated/available bandwidth.

Gaming severs have to accept traffic on certain ports across the internet to make sure users can access them regardless of their location. Most gaming servers have dedicated servers per region.

Script kiddies do not actually log on to gaming servers, they are simply trying to overwhelm the server/bandwidth so legitimate users wont be able to access them.

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