Справочник Пользователя для ZyXEL Communications EMG5324-D10A
Chapter 10 Network Address Translation (NAT)
EMG5324-D10A User’s Guide
170
Device keeps track of the original addresses and port numbers so incoming reply packets can have
their original values restored. The following figure illustrates this.
their original values restored. The following figure illustrates this.
Figure 79
How NAT Works
192.168.1.13
192.168.1.10
192.168.1.11
192.168.1.12
SA
192.168.1.10
SA
IGA1
Inside Local
IP Address
IP Address
192.168.1.10
192.168.1.11
192.168.1.12
192.168.1.13
192.168.1.11
192.168.1.12
192.168.1.13
Inside Global
IP Address
IGA 1
IGA 2
IGA 3
IGA 4
IP Address
IGA 1
IGA 2
IGA 3
IGA 4
NAT Table
WAN
LAN
Inside Local
Address (ILA)
Address (ILA)
Inside Global
Address (IGA)
Address (IGA)