Both 1:1 NAT and Server NAT are performing types of DMZ NAT, one using an
private IP the other an public IP.
So a reasonable option is to add the subtitles: "Private IP DMZ NAT" and
"Public IP DMZ NAT".
Netgear and Zyxel use the phrase Multi-NAT:
Firewall.cx call 1:1 NAT Static-NAT:
http://www.firewall.cx/nat-static-part1.php and then introduce a different
type of NAT that m0n0wall doesn't do, called Dynamic-NAT:
http://www.firewall.cx/nat-dynamic-part1.php This is where the WAN IP is
taken from a pool of addresses.
Juniper use the phrase Mapped-IP (MIP) :
SonicWall use the term Transparent Mode: