Nat Application; Table 4-1 Nat Mapping Types - ZyXEL Communications Prestige 100IH User Manual

P100IH ISDN Router
4.2

NAT Application

The following figure illustrates a possible NAT application, where three inside LANs behind the Prestige can
"talk" to three distinct Internet destinations. More examples follow at the end of this chapter.
NAT

Table 4-1 NAT Mapping Types

Type
One-to-One
Many-to-One (SUA/PAT)
Many-to-Many Overload
Many-to-Many No Overload
Server
IP Mapping
ILA1 IGA1
ILA1 IGA1
ILA2 IGA1
...
ILA1 IGA1
ILA2 IGA2
ILA3 IGA1
ILA4 IGA2
...
ILA1 IGA1
ILA2 IGA2
ILA3 IGA3
...
Server 1 IP IGA1
Server 2 IP IGA1
Server 3 IP IGA1
4-3