ZyXEL P-861H-G2 User Guide - Page 88

NAT Mapping Types

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Prestige 861H Series User's Guide 6.1.5 NAT Mapping Types NAT supports five types of IP/port mapping. They are: • 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 (for instance, PAT, port address translation), ZyXEL's Single User Account feature that previous ZyXEL routers supported (the SUA Only option in today's routers). • Many to Many Overload: In Many-to-Many Overload mode, the Prestige maps the multiple local IP addresses to shared global IP addresses. • Many-to-Many No Overload: In Many-to-Many No Overload 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. Port numbers do not change for One-to-One and Many-to-Many No Overload NAT mapping types. The following table summarizes these types. Table 16 NAT Mapping Types TYPE One-to-One Many-to-One (SUA/PAT) Many-to-Many Overload Many-to-Many No Overload Server IP MAPPING ILA1ÅÆ IGA1 ILA1ÅÆ IGA1 ILA2ÅÆ IGA1 ... ILA1ÅÆ IGA1 ILA2ÅÆ IGA2 ILA3ÅÆ IGA1 ILA4ÅÆ IGA2 ... ILA1ÅÆ IGA1 ILA2ÅÆ IGA2 ILA3ÅÆ IGA3 ... Server 1 IPÅÆ IGA1 Server 2 IPÅÆ IGA1 Server 3 IPÅÆ IGA1 SMT ABBREVIATION 1:1 M:1 M:M Ov M:M No OV Server 87 Chapter 6 Network Address Translation (NAT) Screens

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Prestige 861H Series User’s Guide
87
Chapter 6 Network Address Translation (NAT) Screens
6.1.5
NAT Mapping Types
NAT supports five types of IP/port mapping. They are:
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 (for instance, PAT, port address
translation), ZyXEL’s Single User Account feature that previous ZyXEL routers
supported (the
SUA Only
option in today’s routers).
Many to Many Overload
: In Many-to-Many Overload mode, the Prestige maps the
multiple local IP addresses to shared global IP addresses.
Many-to-Many No Overload
:
In Many-to-Many No Overload 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.
Port numbers do
not
change for
One-to-One
and
Many-to-Many No Overload
NAT
mapping types.
The following table summarizes these types.
Table 16
NAT Mapping Types
TYPE
IP MAPPING
SMT ABBREVIATION
One-to-One
ILA1
IGA1
1:1
Many-to-One (SUA/PAT)
ILA1
IGA1
ILA2
IGA1
M:1
Many-to-Many Overload
ILA1
IGA1
ILA2
IGA2
ILA3
IGA1
ILA4
IGA2
M:M Ov
Many-to-Many No Overload
ILA1
IGA1
ILA2
IGA2
ILA3
IGA3
M:M No OV
Server
Server 1 IP
IGA1
Server 2 IP
IGA1
Server 3 IP
IGA1
Server