This means that:
» 20 NAT IPv4 ports can be customized directly by the customer, for TCP and UDP;
» 3 ports are automatically pre-reserved by VirtFusion for services provided for the customer, more specifically SSH bridging at port 22 and two others directed at internal Windows/*nix services, over TCP.

This also means that SSH bridging does not count towards the customized port range available for the customer, contrary to what used to occur on the previous system.