BEETEL 450TC3, User Manual

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5.3.2.6 Nat IP Mapping
NAT IP mapping allows you to configure one IP pool for specified source IP address from LAN,
so a packet whose source IP is in range of the specified address will select one IP address from
pool for NAT.
Go to Advanced->NAT->NAT IP Mapping page, you can configure the mapping rules.

Type
the type of this mapping rule. It can be “One-to-One”, “Many-to-One” ,“Many-to-Many” and
“One-to-Many”.

One-to-One: one local IP will be mapped to one global IP

Many-to-One: the IP between “Local Start IP” and “Local End IP” will be mapped to a
global IP

Many-to-Many: the IP between “Local Start IP” and “Local End IP” will be mapped to
the IP between “Global Start IP” and “Global End IP”

One-to-Many: one local IP will be mapped to any of the IP between “Global Start IP”
and “Global End IP”

Local Start IP
a local IP address

Local End IP
a local IP address

Global Start IP