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NetScreen Secures Wireless Telecommunication Providers Networks

Nine of Top 10 Global Telecommunication Carriers’ Use NetScreen Security Solutions

Sunnyvale, CA - March 22, 2004 - NetScreen Technologies, Inc. (Nasdaq: NSCN) today announced that its network security solutions continue to be selected by some of the largest telecommunication carriers worldwide. This is evidenced by nine of Fortune Magazine’s top 10 “Global Telecommunication” carriers selection of NetScreen solutions to secure their infrastructures and/or end customers’ mobile traffic.

NetScreen solutions, available with special features to protect wireless carriers’ infrastructures, including General Packet Radio Services (GPRS) and Universal Mobile Telephone System (UMTS) networks, can meet the security needs of global carriers by allowing inspection and policy enforcement for GPRS Tunneling Protocol (GTP) traffic. NetScreen solutions also provide multiple levels of access control and protection against malicious and wireless network-specific attacks, such as Denial of Service and “overbilling” attacks, in addition to enabling operators to offer value-added services, such as corporate access, using GPRS/3G networks.

Many of today’s largest and most well-respected mobile operators, including 18 of Fortune’s top 24 listed global telecommunication providers, in addition to many regional providers, such as Hutchison 3G Australia and TELUS, recognize the value of NetScreen’s integrated firewall and virtual private network (VPN) solutions to protect wireless infrastructures and their customers’ communications and corporate intranets, which are often vulnerable to a myriad of attacks and threats.

Hutchison 3G Australia has deployed NetScreen-500 and -5400 systems to successfully secure its wireless infrastructure.

“NetScreen’s network security solutions have granular policy control, enabling us to effectively secure our mobile infrastructure and corporate accounting and billing networks without jeopardizing network performance. This allows us to offer our customers a secure service,” said Victa McClelland, Chief Technical Officer at Hutchison 3G Australia.

TELUS, one of Canada’s leading providers of data, Internet Protocol (IP), voice and wireless communications services, also is using NetScreen solutions.

“In addition to providing excellent security functionality, NetScreen solutions offer numerous deployment, management and resiliency features that can help increase our productivity and minimize total cost of ownership,” said Michael Gelinas, vice president, TELUS Managed Infrastructure Solutions. “This allows us to operate highly effective, reliable and reasonably priced security services for our customers while maintaining a business advantage.”

“NetScreen’s adoption as a preferred vendor for leading mobile carriers reinforces the growing demand for security within wireless networks,” said David Flynn, vice president of marketing at NetScreen. “By providing increased security functionality that allows customers to more confidently leverage mobile network services for critical business applications, NetScreen is enabling world-class wireless carriers to provide a secure and cost-effective solution.”

The NetScreen Security Solution for Wireless Networks

The NetScreen-500 GPRS security system enables mobile network operators to strengthen security of their GSM-based networks and the services provided to end customers. The NetScreen GPRS system also provides for a more seamless transition to 3G wireless networks. The NetScreen GPRS system, which was first introduced in March 2002, supports the newest standards for securely transmitting information via GPRS. It includes broad security functionality required specifically for wireless networks and supports a variety of networking protocols to ease deployment of the devices into complex environments.

For more information about NetScreen products, visit:

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 http://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. 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”, “can”, “provides”, “enabling”, “designed”, “allows” and “continues”, 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.