ZyXEL Communications P-2612HW-F1 User Manual page 183

and port numbers so incoming reply packets can have their original values
restored. The following figure illustrates this.
Figure 104 How NAT Works
LAN
192.168.1.12
192.168.1.11
P-2612HW-F1 User's Guide
192.168.1.13
SA
192.168.1.10
Inside Local
Address (ILA)
192.168.1.10
NAT Table
Inside Local Inside Global
IP Address
IP Address
192.168.1.10
IGA 1
192.168.1.11
IGA 2
192.168.1.12
IGA 3
192.168.1.13
IGA 4
SA
IGA1
Inside Global
Address (IGA)
Chapter 9 NAT
WAN
Internet
183