WESM zl Management and Configuration Guide WT.01.28 and greater

8-5
Configuring Network Address Translation (NAT)
Overview
Figure 8-2 illustrates this configuration, which allows wireless stations to use IP
addresses local to the wireless network but still to open sessions with servers in the
Ethernet network.
Figure 8-2. Dynamic Source NAT on Wireless Traffic
You can also implement NAT on the module to ready wireless traffic for transmission
to the Internet—if you do not have another device that does so. Many companies
have only one public IP address although they have many employees who need
Internet access. With dynamic NAT, all these employees can share one IP address.
When users on the company’s wireless network send requests to the Internet, the
Wireless Edge Services zl Module translates the senders’ local IP addresses to a
global address—the module’s IP address in the wired network. After translating
packets’ source IP addresses, the module forwards the requests onto the Ethernet
network and toward the Internet.