Drop the folders in the archive in the addons/sourcemod folder.
What engines are supported?
Orange Box Valve (Source 2009).
Why does this exist?
Some people won't use the full ServerSecure VSP due to the cosmetic ping time increase, this is also missing from the Linux version of ServerSecure and D-FENS has been proven to be bypassed.
Who do I thank for this?
The method is directly from ServerSecure and was writen by AzuiSleet. All I have done is split out the code and converted it to use a different Detours lib that is cross-platform.