ZyXEL Communications Prestige 662HW Series, User Manual

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Prestige 662HW Series User’s Guide
Network Address Translation (NAT) 31-1
Chapter 31
Network Address Translation (NAT)
This chapter discusses how to configure NAT on the Prestige.
31.1 Using NAT
You must create a firewall rule in addition to setting up SUA/NAT, to allow traffic from the WAN to
be forwarded through the Prestige.
31.1.1 SUA (Single User Account) Versus NAT
SUA (Single User Account) is a ZyNOS implementation of a subset of NAT that supports two types
of mapping,
Many-to-One and Server . See section 31.3.1 for a detailed description of the NAT set
for SUA. The Prestige also supports Full Feature NAT to map multiple global IP addresses to
multiple private LAN IP addresses of clients or servers using mapping types .
♦ Choose SUA Only if you have just one public WAN IP address for your Prestige.
♦ Choose Full Feature if you have multiple public WAN IP addresses for your Prestige.
31.2 Applying NAT
You apply NAT via menus 4 or 11.3 as displayed next. The next figure shows you how to apply NAT
for Internet access in menu 4. Enter 4 from the main menu to go to
Menu 4 - Internet Access Setup .