Without attacks there is more than 5 request/second (probably from server browser) so a caching system should be implemented for a2s_info

note: this https://forums.bistudio.com/topic/127167-patch-the-game-to-prevent-ddos-exploit-please/
is unrelated issue, the cause at that time was GameSpy query and was fixed by enabling security countermeasures in theirs in theirs framework
our engine netcode issue was sorted by handshake implementation etc.

Arma 2: OA 1.63 and Arma 3 are now utilizing SteamWorks framework

http://playrust.com/devblog-74/#more-4374

facepunch 1, Bohemia 0