Static Network Address Translation (NAT) creates a permanent, one-to-one mapping between an address
on an internal network (a higher security level interface) and a perimeter or external network (lower
security level interface). For example, to share a web server on a perimeter interface with users on the
public Internet, use static address translation to map the server’s actual address to a registered IP address.
Static address translation hides the actual address of the server from users on the less secure interface,
making casual access by unauthorized users less likely. Unlike NAT or PAT, it requires a dedicated
address on the outside network for each host, so...