User Manual

SPEEDLAN 9000 Series Installation and Operation User Guide Version 3.03
Basics of IP Addressing 9-11
Diagram of Outgoing NAT
Figure 9-3: Outgoing NAT
As the packet is transmitted from the private network (in Building B) across the public
network (public address in Building A and the Internet), the packet will be re-addressed
as 192.0.2.3 (public address). When the packet returns to Building B, the packet will
be re-addressed to the IP address of the private network by using the MAC address
contained in the header to identify the destination.
Inbound Port 80 request is re-addressed
to Private address 10.0.0.3. Then, it is
forwarded across the private network
Ethernet
Router
192.0.2..1
Private Address on Local Interface
10.0.0.1
10.0.0.2
10.0.0.4
Ethernet
Public Address on Remote Interface
192.0.2.3
Building A Building B
SPEEDLAN 9000 Router
192.0.2.0
SPEEDLAN 9000 Router
10.0.03
–
Internet