User's Guide

Table Of Contents
RF jamming
AirDefense WIPS can mitigate wireless threats via the air by disabling wireless connections between
intruders and authorized devices. A WIPS license enables the Air Termination feature which is extremely
precise at ensuring that only the oending device is prohibited from operating.
Port suppression is also enable to identify switch ports that have oending devices connected to them.
Once detected, the port is turned o to prevent the rogue device from accessing the network.
A WIPS license also enables Sensor Monitoring which is added to the i tab. Sensors are used to monitor
your network for threats.
Planning Your Sensor Deployment
When adding a WIPS license, you should plan where you will be placing your sensors. AirDefense uses
remote sensors to collect data transmitted by 802.11a-, b-, g-, and n-compliant devices and to send that
data to a your central AirDefense appliance for analysis and correlation. Because the sensors are passive
devices that function primarily in listen-only mode, a single sensor can monitor multiple APs.
You should leverage any site surveys you conduct for placement of s as aids to sensor placement
decisions.
Keep the following considerations in mind when deploying your sensors.
Deployment Considerations
Building Structure
Many materials used in building construction may significantly impact the propagation of signals in the
2.4 GHz spectrum or the 5 GHz spectrum.
Concrete reinforcement bars
Elevator shafts
Electric motors (for example, blowers and generators)
Lighting fixtures.
Physical and Electromagnetic Interference
Many devices can interfere with sensors monitoring of the wireless network, including:
Cordless phones and headsets
Bluetooth devices
Microwave ovens
Consumer cordless devices (for example, surveillance cameras, baby monitors, and video
transmission extenders).
Device Placement Considerations
Keep the following considerations in mind when you place devices:
Device Density
Device Requirements per Area
Legacy Content
Planning Your Sensor Deployment
Extreme AirDefense User Guide for version 10.5. 1379