User's Manual

SPEEDLAN Installation and Operation User Guide
Setting Up the IP Addresses (IP Host Setup) 7-11
Diagram of Outgoing NAT
As the packet is transmitted from the private network (in Building B) across the public network
(Building A and the Internet), the packet will be re-addressed as 204.101.20.3, also known as the
public address. When the packet returns to SPEEDLAN 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
Internet
Ethernet
Router
204.101.20.1
SPEEDLAN
Brouter A
204.101.20.2
Hub
SPEEDLAN
Brouter B
Private Address on Local Interface
10.0.0.1
10.0.0.2
10.0.0.4
Ethernet
Hub
Public Address on Remote Interface
204.101.20.3
Building A Building B
10.0.0.3