User's Manual

Configuring Network Address Translation
308625-14.00 Rev 00
2-7
In Figure 2-4, the NAT router then replaces the local source address (10.0.0.15)
with the translated global address (192.55.10.3) and sends the packet on its way to
its destination in company B’s network.
Figure 2-4. NAT Replaces the Local Address with a Registered Source Address
NAT router
Local address
range list
Global address
range list
Current local/global
mapping entry list:
10.0.0.1 192.55.10.1
10.0.0.2 192.55.10.2
10.0.0.15 192.55.10.3
10.0.0.15
IP packet
Source address
Destination address
IP0054A
192.55.10.3
15.0.0.0 to 15.255.255.255
50.1.1.0 to 50.1.1.255
192.55.10.0 to 192.55.10.255
192.20.10.0 to 192.20.10.255
192.100.20.2
10.0.0.0 to 10.255.255.255