Help with "blocking" main.exe & Fixing Wild Proxy !

Hi there...
I want to know if it's possible to "block" our main.exe, so it needs to be launched using a launcher (which we already have with autoupdator) We want to prevent wild proxy and to block running main.exe multiple times.

Thanks ~

You need antihack or anticheat for blocking wild proxy.
You need to hex main and put 127.0.0.1 IP, so users can connect only with launcher. For this U need enabled UseNPGGChecksum in GameServer.

I talked to him he said he already tried with 127.0.0.1 and if he use that ip inside the main, you can't connect to the server. It doesn't display any servers to connect too. The real IP is however located in the launcher. Isnt the "UseNPGG" for Gameguard? How will that help him with the main?

UseNPGGChecksum is the server side checksum of main.exe

So if it is enabled, what does it do?