WALL IE, Industrial Ethernet Bridge and Firewall | Version 1 | 15.05.2017
23
6.2
NAPT
"NAPT for LAN to WAN traffic" replaces the sender addresses of queries from the LAN through the
address of the WALL IE in the WAN. NAPT is also referred to as "Port Address Translation" (PAT).
The option "
NAPT: Active
" thus enables communication of devices from the LAN with devices in the
WAN. WALL IE thereby acts as a gateway to manage the exchange of the IP addresses of the WAN
network and also looks after the assignment of the response.
In order that the communication with activated NAPT from the LAN to WAN functions, the LAN address
of the WALL IE must be entered into the devices in the LAN as a gateway!
Source IP 10.10.1.1:xxx
Source 192.168.10.1:80
