WESTFORD, Mass. – November 12, 2007—NetScout Systems, Inc. (NASDAQ: NTCT), the industry pacesetter for advanced network and application performance management, congratulates long-time customer Johnson Controls for winning the InfoWorld 100 Award for its use of the nGenius Solution to dramatically reduce troubleshooting times.

InfoWorld editors confer the annual awards to honor IT projects that demonstrate the most creative use of cutting-edge technologies to further their business goals. InfoWorld issued a press release on the winners earlier today.

“This is yet another proof point: network and application performance management has the potential to substantially impact the business,” noted Jim Frey, vice president of marketing at NetScout. “Not only can global organizations realize a fast return on their investments in these technologies, but they understand it is a strategic necessity.”

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About NetScout Systems
NetScout Systems, Inc. (NASDAQ: NTCT) has set the pace of innovation for advanced network and application service assurance for over twenty years. Our world-renowned solutions provide trusted, comprehensive, and actionable performance intelligence, including early warning, network-wide real-time and historical views, and rapid, definitive problem analysis down to the packet level. These capabilities are vital to IT operators who are accountable for reducing the Mean Time to Resolution. The world’s largest enterprises, government agencies, and service providers depend upon NetScout’s nGenius and Sniffer (formerly Network General) brands to assure service performance to their users by reducing or preventing disruptions and degradations. More information about NetScout is available at http://www.netscout.com.

SOURCE NetScout Systems, Inc. For further information, contact: Christine Johansen Manager, Public Relations NetScout Systems, Inc. 978.614.4113 johansenc@netscout.com Brian Alberti Davies Murphy Group, Inc. 781-418-2403 netscout@daviesmurphy.com (NTCT)