ZyXEL Communications P-660RU-T V2 12.2 SUA (Single User Account) Versus NAT

Chapter 12 Network Address Translation (NAT) Screens

"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 20 NAT Mapping Types

TYPE	IP MAPPING
One-to-One	ILA1ÅÆ IGA1
Many-to-One (SUA/PAT)	ILA1ÅÆ IGA1
	ILA2ÅÆ IGA1
	…
Many-to-Many Overload	ILA1ÅÆ IGA1
	ILA2ÅÆ IGA2
	ILA3ÅÆ IGA1
	ILA4ÅÆ IGA2
	…
Many-to-Many No Overload	ILA1ÅÆ IGA1
	ILA2ÅÆ IGA2
	ILA3ÅÆ IGA3
	…
Server	Server 1 IPÅÆ IGA1
	Server 2 IPÅÆ IGA1
	Server 3 IPÅÆ IGA1

12.2 SUA (Single User Account) Versus NAT

SUA (Single User Account) is a ZyNOS implementation of a subset of NAT that supports two types of mapping, Many-to-Oneand Server. The ZyXEL Device also supports Full Feature NAT to map multiple global IP addresses to multiple private LAN IP addresses of clients or servers using mapping types as outlined in Table 20 on page 94.

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Choose SUA Only if you have just one public WAN IP address for your ZyXEL Device.

Choose Full Feature if you have multiple public WAN IP addresses for your ZyXEL Device.

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	P-660RU-T v2 User’s Guide