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Prestige 2602H-6xC Support Notes
All contents copyright (c) 2005 ZyXEL Communications Corporation.
21
The following table summarizes these types.
NAT Type IP Mapping
Mapping
Direction
One-to-One ILA1<--->IGA1 Both
Many-to-One (SUA/PAT)
ILA1---->IGA1
ILA2---->IGA1
...
Outgoing
Many-to-Many Overload
ILA1---->IGA1
ILA2---->IGA2
ILA3---->IGA1
ILA4---->IGA2
...
Outgoing
Many-to-Many No
Overload
(Allocate by Connections)
ILA1---->IGA1
ILA2---->IGA3
ILA3---->IGA2
ILA4---->IGA4
...
Outgoing
Server
Server 1 IP<----IGA1
Server 2 IP<----IGA1
Incoming
• SUA Versus NAT
SUA (Single User Account) in previous ZyNOS versions is a NAT set with 2 rules, Many-to-One and Server.
The Prestige now has Full Feature NAT support to map global IP addresses to local IP addresses of clients or
servers. With multiple global IP addresses, multiple severs of the same type (e.g., FTP servers) are allowed on
the LAN for outside access. In previous ZyNOS versions (that supported SUA 'visible' servers had to be of
different types. The Prestige supports NAT sets on a remote node basis. They are reusable, but only one set is
allowed for each remote node. The Prestige 2602HW supports 8 sets since there are 8 remote node. The default
SUA (Read Only) Set in menu 15.1 is a convenient, pre-configured, read only, Many-to-One mapping set,
sufficient for most purposes and helpful to people already familiar with SUA in previous ZyNOS versions.
• SMT Menus
1. Applying NAT in the SMT Menus