Table 44 Nat Mapping Types - ZyXEL Communications P-335WT User Manual

P-335 Series User's Guide
• One to One: In One-to-One mode, the Prestige maps one local IP address to one global
IP address.
• Many to One: In Many-to-One mode, the Prestige maps multiple local IP addresses to
one global IP address. This is equivalent to SUA (i.e., PAT, port address translation),
ZyXEL's Single User Account feature (the SUA Only option).
• Many-to-Many Overload: In Many-to-Many Overload mode, the Prestige maps the
multiple local IP addresses to shared global IP addresses.
• Many One-to-One: In Many-One-to-One mode, the Prestige maps each local IP address
to a unique global IP address.
• Server: This type allows you to specify inside servers of different services behind the
NAT to be accessible to the outside world.
The following table summarizes these types.

Table 44 NAT Mapping Types

TYPE
One-to-One
Many-to-One (SUA/PAT)
Many-to-Many Overload
Many One-to-One
Server
146
Note: Port numbers do not change for One-to-One and Many
One-to-One NAT mapping types.
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
Chapter 9 Network Address Translation (NAT) Screens
SMT ABBREVIATION
1-1
M-1
M-M Ov
M-1-1
Server