Firewall setup for CS:GO

[EgzonK]

Hello

Can anyone tell me how to setup the Firewall for CS:GO ?

I have a KS-Game Dedi , but i dont know how to setup the rules to protect my game server.

I want to protect just port for cs:go like 27015

https://i.ibb.co/txKtyhT/rule.png

I contacted the support but they didnt offered me any help so im lost now

Any help please ?

Thanks