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Infonetics VPN/Firewall Report: NetScreen Leads in Unit Market Share For High-End Firewall and VPN Appliance Category

Sunnyvale, CA - March 12, 2003 - NetScreen Technologies Inc. (Nasdaq: NSCN) today announced that a report from Infonetics Research for the fourth quarter of 2002 of the worldwide VPN and Firewall market shows that NetScreen achieved the No. 1 position in unit market share of the high-end (greater than $30,000) price-banded category of VPN and firewall appliances.

Data from the report, titled "VPN and Firewall Products-Quarterly Worldwide Market Share and Forecasts for 4Q02," shows that in the fourth quarter of 2002, NetScreen achieved unit market share of 33 percent in the high-end (greater than $30,000) price-banded category of VPN and firewall appliances, an increase of more than 5 percentage points over the prior quarter.

The Infonetics report also shows that NetScreen's revenue, as a percentage of total revenue for the VPN and firewall hardware and software market, grew more in calendar 2002 than any other individual company listed in the report.

"NetScreen gained market share from its competition and grew faster than any other established player in the firewall and VPN space throughout 2002," said Jeff Wilson, executive director at Infonetics, an international market research and consulting firm covering the networking and telecommunications industries. "Specifically at the high-end, NetScreen's 5000 Series systems have built up steam in the market as enterprises find new ways to push security into the heart of the LAN and use integrated purpose-built hardware-based appliances."

For more information about NetScreen products, visit: http://www.netscreen.com/products/index.html.

About NetScreen Technologies

NetScreen Technologies, Inc., is a leading developer of integrated network security solutions that offer the security, performance and total cost of ownership required by enterprises and carriers. NetScreen's innovative solutions provide key security technologies, such as virtual private network, denial of service protection, firewall and intrusion prevention, in a line of easy-to-manage security appliances and systems. NetScreen is located at 805 11th Ave., Sunnyvale, CA, 94089. More information on NetScreen's products can be found at http://www.netscreen.com or by calling toll free at 1-800-638-8296.

NetScreen is a trademark of NetScreen Technologies, Inc. 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, statements regarding the current trends in markets where we compete, and words such as "will," "can," "expects," and "continuing" are forward-looking statements. Actual outcomes and results may differ materially from expectations in this press release, as a result of many risks and uncertainties. Such risks and uncertainties include whether the possibility that the market for security products will not grow as projected, that demand for NetScreen products may not grow or continue, that new products if and when introduced amy not be successful.