ZyXEL SHDSL Router 791R 91-004-247008B Manual Do Utilizador

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91-004-247008B
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Prestige 791R G.SHDSL Router 
11-4 
NAT 
 
Figure 11-2 NAT Application With IP Alias 
11.1.5 NAT Mapping Types 
NAT supports five types of IP/port mapping.  They are: 
1.  One to One: In One-to-One mode, the Prestige maps one local IP address to one global IP address. 
2.  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).  
3.  Many to Many Overload: In Many-to-Many Overload mode, the Prestige maps the multiple local IP 
addresses to shared global IP addresses.