Lastly, the notification manager lets you select the people to notify by e-mail and the frequency of messages. It also enables SNMP integration if needed. Unfortunately there is no option to send alerts to pagers.
Reporting Skills
Overall system reporting is the key benefit of Guard, not only as an aid to security auditing but as a troubleshooting and performance-planning tool. Guard comes with some very impressive canned report formats to choose from. Much of this information can be useful for both capacity planning and security audits. There are options to view bandwidth utilization per station and average traffic statistics by access point as well--information useful for centralized performance troubleshooting. Guard can't track the precise location of rogue devices like some other monitors can, but it does provide an overall picture. Additionally, AirDefense only supports 802.11b. The company says it is committed to adding support for emerging protocols, but that will lead to higher costs. I am not aware of any other WLAN product that provides the same level of detail and flexibility for reporting.
Guard 3.0, targeted at organizations that have production WLANs and want to ensure that they aren't vulnerable to internal or external intrusions, comes with a hefty price tag--$25,000 for a complete starter pack that includes a server appliance, five sensors, licenses for 15 APs, training and support. But it adds real value to an enterprise wireless network.
Saurabh Bhasin is a research associate with the Center for Emerging Network Technologies at Syracuse, N.Y. Write to him at [email protected].
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