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Aurora Health Care Deploys NetScreen Security Solutions

SUNNYVALE, CA - November 18, 2003 - NetScreen Technologies, Inc. (Nasdaq: NSCN) today announced that Aurora Health Care, a not-for-profit Wisconsin health care provider, has deployed NetScreen’s network security solutions to secure critical data located at its main hospital and remote clinic sites.

When Aurora Health Care expanded its operations throughout Wisconsin, its previous proxy firewall solution was not meeting the health care provider’s scalability and throughput needs. The IT department recognized the need to update its network security solution - in particular the firewall. After evaluating solutions from multiple vendors, Aurora selected NetScreen’s hardware-based, purpose-built integrated firewall and virtual private network (VPN) security systems and appliances.

The NetScreen devices have helped Aurora Health Care decrease administration time and effort spent maintaining its firewalls, setting policies and creating historical reports.

“We can now make changes to the network at any time without having to take the entire system down,” said Dan Lukas, lead WAN and security architect at Aurora Health Care. “The IT department is now able to spend more time on core network projects rather than firewall maintenance.”

A pair of NetScreen-500 systems, providing up to 700 Mbps firewall performance and up to 250 Mbps of 3DES VPN performance, are deployed in High Availability (HA) mode protecting the hospital’s DS3 connection at the Internet gateway and partitioned extranets.

NetScreen-204 appliances, which offer up to 400 Mbps of firewall performance and up to 200 Mbps of 3DES VPN performance, are deployed in active/passive mode at multiple business partner locations. And, NetScreen-5XP appliances, providing up to 20 Mbps firewall and up to 13 Mbps of 3DES VPN performance with support for 2,000 concurrent sessions, provide a cost-effective solution to protect Aurora’s remote site servers.

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About Aurora Health Care

Aurora Health Care is a not-for-profit Wisconsin health care provider and a nationally recognized leader in efforts to improve the quality of health care. Aurora has care sites in 75 communities throughout eastern Wisconsin.

About NetScreen Technologies

NetScreen Technologies, Inc., is a leading developer of network security and access solutions for enterprises and carriers worldwide. NetScreen’s solutions offer customers multiple layers of network and application-level protection in purpose-built appliances and systems that optimize performance and reduce total operating costs. NetScreen is located at 805 11th Ave., Sunnyvale, Calif., 94089. More information on NetScreen’s products can be found at www.netscreen.com or by calling toll free at 1-800-638-8296.

NetScreen and the NetScreen logo are trademarks of NetScreen Technologies, Inc. in the United States and other countries. Trend Micro is a trademark or registered trademark of Trend Micro Incorporated. Other trademarks are the property of their respective owners.

This press release contains forward-looking statements about events and circumstances that have not yet occurred. For example, words such as “will”, “expects”, “provide”, “continue”, and “allows”, or other statements in the future tense, are forward-looking statements. Actual outcomes and results may differ materially from expectations in this press release due to a number of risks and uncertainties. Such risks and uncertainties include whether the market for security products will grow as projected, if at all, whether demand for NetScreen products will continue, whether new products, if and when introduced, will be successful and whether products will perform as expected.