Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 208)

196 Brocade Mobility RFS Controller System Reference Guide
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Network Address Translation (NAT) is a technique to modify network address information within IP
packet headers in transit. This enables mapping one IP address to another to protect wireless
controller managed network address credentials. With typical deployments, NAT is used as an IP
masquerading technique to hide private IP addresses behind a single, public facing, IP address.
Additionally, NAT is a process of modifying network address information in IP packet headers while
in transit across a traffic routing device for the purpose of remapping one IP address to another. In
most deployments NAT is used in conjunction with IP masquerading which hides RFC1918 private
IP addresses behind a single public IP address.
NAT can provide a profile outbound Internet access to wired and wireless hosts connected to either
an Access Point or a wireless controller. Many-to-one NAT is the most common NAT technique for
outbound Internet access. Many-to-one NAT allows an Access Point or wireless controller to
translate one or more internal private IP addresses to a single, public facing, IP address assigned to
a 10/100/1000 Ethernet port or 3G card.
To define a NAT configuration or override that can be applied to a profile:
1. Select Devices from the Configuration tab.
The Device Configuration screen displays a list of managed devices or peer controllers, service
platforms or Access Points within the managed network.
2. Select a target device (by double-clicking it) from amongst those displayed within the Device
Configuration screen.
Devices can also be selected directly from the Device Browser in the lower, left-hand, side of
the UI.
3. Select Profile Overrides from the Device menu to expand it into sub menu options.
4. Select Security to expand its sub menu options.
5. Select NAT.
NOTE
A blue override icon (to the left of a parameter) defines the parameter as having an override applied.
To remove an override go to the Basic Configuration section of the device and click the Clear
Overrides button. This removes all overrides from the device.