WESTFORD, Mass., November 16, 2006 – NetScout Systems, Inc. (NASDAQ: NTCT), a leading provider of network and application performance management solutions, last night was presented Frost & Sullivan’s 2006 Customer Value Enhancement Award in the network performance monitoring & management category.

The award is given annually by Frost & Sullivan, a global growth consulting company, to a company whose innovation is expected to significantly improve customer interaction and contribute to customer satisfaction. Frost & Sullivan’s analysts take into consideration four factors—customer feedback, customer satisfaction, market share, and product/technology innovation.

“Over the past few years, network performance management and monitoring has gained tremendous importance,” said Frost & Sullivan analyst Sujan Sami. “NetScout has fulfilled the needs of very demanding customers for years, and it is also well-positioned to address their future needs.”

This is the second customer-focused award NetScout has received in as many quarters; in June, NetScout was honored with a NorthFace ScoreBoard award by Omega Management Group for best-in-class ratings from customers surveyed about NetScout. NetScout also received the NorthFace ScoreBoard award in 2005.

“Whether they are enterprises looking to achieve real cost savings with rapid repair of application performance problems, government agencies looking to decrease operational costs and complexity, or wireless carriers looking to improve service assurance, our customers must experience continuous, demonstrable improvement in the quality of our products and services” said Michael Szabados, senior vice president of product operations at NetScout. “We are honored by Frost & Sullivan’s prediction of our future success in this area, and look forward to making it a reality.”

NetScout received the award at Frost & Sullivan’s award ceremony last night in San Antonio, Texas.

About Frost & Sullivan’s Best Practices Awards
Frost & Sullivan’s Best Practices Awards recognize companies in a variety of regional and global markets for demonstrating outstanding achievement and superior performance in areas such as leadership, technological innovation, customer service, and strategic product development. Industry analysts compare market participants and measure performance through in-depth interviews, analysis, and extensive secondary research in order to identify best practices in the industry. For more information, visit www.awards.frost.com.

About NetScout Systems
NetScout Systems, Inc. (NASDAQ: NTCT) is a market leader and pioneer of integrated network and application performance management products and solutions that assure critical business services across the enterprise. More than 3200 organizations worldwide have deployed NetScout's nGenius® Performance Management System to increase their return on infrastructure investments by optimizing the performance of networks and applications according to business priorities. NetScout is headquartered in Westford, Massachusetts and has offices worldwide. Further information is available at http://www.netscout.com.

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NetScout and the NetScout logo, nGenius, and Quantiva are registered trademarks of NetScout Systems, Inc. The CDM logo, MasterCare, Progressive Analytics and the MasterCare logo, are trademarks of NetScout Systems, Inc. Other brands, product names and trademarks are property of their respective owners. NetScout reserves the right, at its sole discretion, to make changes at any time in its technical information and specifications, and service and support programs.