Nat Mapping Types - E-data DSL-2120 Series User Manual

5.2.1.4 NAT Mapping Types

NAT supports five types of IP/port mapping. They are:
1. One-to-One: In One-to-One mode, the DSL-2120/2120W maps one local IP address to
one global IP address.
2. Many-to-One: In Many-to-One mode, the DSL-2120/2120W maps multiple local IP
addresses to one global IP address.
3. Many-to-Many Overload: In Many-to-Many Overload mode, the DSL-2120/2120W
maps multiple local IP addresses to shared global IP addresses.
4. Many-to-Many
DSL-2120/2120W 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
One-to-One
Many-to-One (SUA/PAT)
Many-to-Many Overload
Proprietary & Confidential
Revision: V1.0
No Overload: In
ILA1 IGA1
ILA1 IGA1
ILA2 IGA1
...
ILA1 IGA1
ILA2 IGA2
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Many-to-Many No
IP MAPPING
Overload mode, the
Apr. 23, 2008