Atlantis Land A02-RA144-W300N - Manual (Page 61)

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7.1.4 NAT Application
The following figure illustrates a possible NAT application, where three inside
LANs (logical LANs using IP Alias) behind the ADSL Router can communicate
with three distinct WAN networks. More examples follow at the end of this
chapter.
7.1.5 NAT Mapping Types
NAT supports five types of IP/port mapping. They are:
1. One to One: In One-to-One mode, the ADSL Router maps one local IP
address to one global IP address.
2. Many to One: In Many-to-One mode, the ADSL Router maps multiple local IP
addresses to one global IP address.
3. Many to Many Overload: In Many-to-Many Overload mode, the ADSL Router
maps the multiple local IP addresses to shared global IP addresses.
4. Many-to-Many No Overload: In Many-to-Many No Overload mode, the ADSL
Router maps each local IP address to a unique global IP address.
5. Server: This type allows you to specify inside servers of different services
behind the NAT to be accessible to the outside world.
The following table summarizes these types.
Type IP Mapping
One-to-One ILA1 IGA1
Many-to-One (SUA/PAT) ILA1 IGA1
ILA2 IGA1