ZyXEL Prestige 792H SDSL Router 91-004-342004B Manual Do Utilizador

Prestige 792H G.SHDSL Router 
 

6-4  

NAT 

5.  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 

The following table summarizes these types. 

One-to-One ILA1ÅÆ IGA1 

1:1 

Many-to-One (SUA/PAT) 

ILA1ÅÆ IGA1 
ILA2ÅÆ IGA1 
… 

M:1 

Many-to-Many Overload 

ILA1ÅÆ IGA1 
ILA2ÅÆ IGA2 
ILA3ÅÆ IGA1 
ILA4ÅÆ IGA2 
… 

M:M Ov 

Many-to-Many No Overload  ILA1ÅÆ IGA1 

ILA2ÅÆ IGA2 
ILA3ÅÆ IGA3 
… 

M:M No OV 

Server 

Server 1 IPÅÆ IGA1 
Server 2 IPÅÆ IGA1 
Server 3 IPÅÆ IGA1 

Server 

SUA (Single User Account) is a ZyNOS implementation of a subset of NAT that supports two types of 
mapping, Many-to-One and Server. The Prestige 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 6-2.