Atlantis Land Compact Router ADSL A02-RA110 - Manual (Page 57)

COMPACT ROUTER ADSL
A02-RA110 Pag. 49
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
…
Many-to-Many Overload ILA1 IGA1
ILA2 IGA2
ILA3 IGA1
ILA4 IGA2
…
Many-to-Many No Overload ILA1 IGA1
ILA2 IGA2
ILA3 IGA3
…
Server Server 1 IP IGA1
Server 2 IP IGA1
Server 3 IP IGA1
7.2 SUA (Single User Account) Versus NAT
SUA (Single User Account) is a implementation of a subset of NAT that supports
two types of mapping, Many-to-One and Server. The ADSL Router 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