WESM zl Management and Configuration Guide WT.01.28 and greater

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Configuring Network Address Translation (NAT)
Overview
Static NAT on Source Addresses
Static source NAT is an alternative to dynamic source NAT. However, instead of
allowing many stations to share one global address, static source NAT sets up a one-
to-one correspondence between a particular IP address and a translated IP address.
Use this option only when relatively few devices in one network (inside or outside)
need to access devices in the other network.
Understanding Local and Global Addresses
When you configure NAT on the Wireless Edge Services zl Module, you define a
local address and a global address. As mentioned earlier, the local address is the pre-
translation address. For source NAT, the local address is always the IP address
assigned to the device for the network in which the device resides. In Figure 8-6, the
local address is any address used by a device in WLAN A—the 10.1.1.0/24 subnet-
work.
Figure 8-6. Local Addresses