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Vistorm Appointed as NetScreen Authorised Support Centre in the U.K.

SUNNYVALE, CA - November 4, 2003 - NetScreen Technologies, Inc. (Nasdaq: NSCN) today announced that it has signed Vistorm as a NetScreen Authorised Support Centre (N.A.S.C.). With support from NetScreen’s global technical support infrastructure, Vistorm will provide a comprehensive range of technical support packages for its customers deploying NetScreen’s complete range of network security solutions.

As an N.A.S.C., Vistorm is entitled to sell support contracts to its NetScreen customers, offering first- and second-level technical support, including on-site assistance options. To enable its delivery of the support and help solve complex issues should they arise, Vistorm has access to NetScreen’s level-3 technical assistance centre (TAC). N.A.S.C. status also enables Vistorm to leverage next business day direct delivery from NetScreen of spare parts to the eligible customer’s location, to have unlimited access to NetScreen’s support website and its software update/upgrade program.

Gareth Green, vice-president of sales for NetScreen in the Europe, Middle East & Africa (EMEA) region, commented: “N.A.S.C.s, such as Vistorm, are able to provide their customers with a single, fully authorised point of contact for both NetScreen product and technical support. This ensures that customers receive top-quality technical support in a localised format, and can therefore optimise their investment in a NetScreen solution by maximizing network security up-time and efficacy.”

Rob Norris, services director at Vistorm, added, “Our accreditation as a NetScreen Authorised Support Centre recognises Vistorm’s investment in security expertise and enables us to provide professional support, 24/7, to the growing base of NetScreen customers.”

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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 Avenue, Building 3, Sunnyvale, CA, 94089, U.S.A., and in Europe at Victoria House, Cross Lanes, Guildford, Surrey GU1 1UJ, U.K. More information on NetScreen’s products in Europe can be found at http://www.netscreen.com or by calling +44 0 8700 75 00 00.

About Vistorm

Formed in 1991, Vistorm delivers information security and application delivery solutions to many of the Times Top 500 companies. Vistorm provides an array of security technologies and services that enable customers to deploy resilient security solutions and delivers 24/7 managed security services for its clients in over 60 countries worldwide. Vistorm also has a strong track record helping customers to plan, deploy and manage their application delivery. Vistorm's proven architecture model provides a robust, scalable and secure platform for application delivery to office-based and remote users. www.vistorm.com

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”, “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.