ZyXEL Communications P-2601HN(L)-F1 Series User Manual page 156

Chapter 11 Network Address Translation (NAT)
and port numbers so incoming reply packets can have their original values
restored. The following figure illustrates this.
Figure 69 How NAT Works
192.168.1.12
192.168.1.11
156
LAN
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)
P-2601HN(L)-F1 Series User's Guide
WAN