P-662H/HW-D Series User’s Guide

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 53 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

 

 

9.2 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 53 on page 160.

•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.

9.3NAT 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.

160

Chapter 9 Network Address Translation (NAT) Screens