Using Nat; Table 7-2 Nat Mapping Types - Nortel Contivity 221 User Manual

Many One to One: In Many-One-to-One mode, the Contivity 221 maps each local IP
address to a unique global IP address.
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-One-to-One NAT mapping types.
The following table summarizes these types.

Table 7-2 NAT Mapping Types

TYPE
One-to-One
Many-to-One (SUA/PAT)
Many-to-Many Overload
Many-One-to-One
Server

Using NAT

7.2
You must create a firewall rule in addition to setting up SUA/NAT, to allow traffic
from the WAN to be forwarded through the Contivity 221.
7.2.1 SUA (Single User Account) Versus NAT
SUA (Single User Account) is an implementation of a subset of NAT that supports two types of
mapping, Many-to-One and Server. The Contivity 221 also supports Full Feature NAT to map
IP MAPPING
ILA1 IGA1
ILA1 IGA1
ILA2 IGA1
...
ILA1 IGA1
ILA2 IGA2
ILA3 IGA1
ILA4 IGA2
...
ILA1 IGA1
ILA2 IGA2
ILA3 IGA3
...
Server 1 IP IGA1
Server 2 IP IGA1
Server 3 IP IGA1
Contivity 221 VPN Switch User's Guide
SMT ABBREVIATION
1-1
M-1
M-M Ov
M-1-1
Server
NAT 7-5