Chapter 10 Network Address Translation (NAT)

Table 55 NAT Mapping Types (continued)

TYPE

IP MAPPING

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

 

 

10.2 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 55 on page 149.

•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.

10.3NAT General Setup

You must create a firewall rule in addition to setting up SUA/NAT, to allow traffic from the WAN to be forwarded through the ZyXEL Device. Click Network > NAT to open the following screen. Not all fields are available on all models.

Figure 100 NAT General

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P-660HW-Tx v3 User’s Guide