[PVE-User] Advices - Proxmox behind L3 or L2 network

[Leslie-Alexandre DENIS]

Hello there,

I'm currently designing a Proxmox based virtualization solution and I'm 
wondering how guys do you manage your edge connection.
Do you prefer to route and setup your own L3 network before exposing the 
server ? Or just let the server with a WAN IP ?
What is your ideas regarding network security (BCP, RP Filtering...) ?

Thanks all,
Regards