ZyXEL Communications Broadband Security Gateway P-312, User Manual, Page: 77 / 254

P312 Broadband Security Gateway
6-4 NAT
remote node basis. They are reusable, but only one set is allowed for each remote node. The Prestige
supports 2 sets since there is only one remote node. The second set (
SUA Only option in Menu 15.1) is a
convenient, pre-configured, read only Many-to-1 port mapping set, sufficient for most purposes ( see section
6.4 for some examples) and helpful to people already familiar with SUA in previous ZyNOS versions.
6.1.6 NAT Application
The following figure illustrates a possible NAT application, where three inside LANs (logical LANs using
IP Alias) behind the Prestige can “talk” to three distinct Internet destinations. More examples follow at the
end of this chapter.
Figure 6-2 NAT Application
6.2 SMT Menus
6.2.1 Applying NAT in the SMT Menus
You apply NAT via menus 4 or 11.3 as displayed next. The next figure how you apply NAT for Internet
access in Menu 4. Enter 4 from the Main Menu to go to
Menu 4 - Internet Access Setup .