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Juniper Networks Rises to #2 in Overall Network Security Market

Infonetics Research Recognizes Juniper Networks as Clear #1 In High-End Firewall/VPN and SSL VPN Markets

SUNNYVALE, Calif., September 11, 2006 - Juniper Networks, Inc. (Nasdaq: JNPR) today announced that it is now the second-largest security vendor in the industry by revenue, according to Infonetics Research, Inc.'s recent report titled, "Network Security Appliances and Software Quarterly Worldwide Market Share and Forecasts for 2Q06." According to the report, Juniper Networks garnered 10 percent revenue market share based on all security product categories during the second quarter of 2006, while also showing growth within most major product categories in which it participates.

"The number two position in overall network security is a great achievement for Juniper Networks, augmenting the company's leadership position in the SSL VPN and high-end firewall markets," said Jeff Wilson, principal analyst for VPNs and security at Infonetics Research. "Additionally, Juniper recently started shipping new router/integrated security appliance products. Once they start shipping in volume over the next few quarters, we expect to see their security business pick up overall."

The same report recognized Juniper Networks as the leader in the high-end firewall and virtual private network (FW/VPN) product category (greater than or equal to $30,000 price band), with 35 percent revenue market share during 2Q06. The Juniper Networks high-end firewall/VPN products include the NetScreen-5000 series, delivering up to 30Gbps high-end firewall and 15Gbps VPN throughput, and the Integrated Security Gateway (ISG) 1000 and 2000 firewall/VPNs. A key factor of Juniper Networks success with customers is the integration of the company's IDP intrusion prevention functionality into the ISG. Juniper Networks sets the standard for multi-service security gateways by offering medium-to-large enterprises, carriers and data centers the ISG 1000 and 2000 platforms as a single firewall/VPN service or with intrusion detection and prevention (IDP) as an elective add-on to protect its networks with increased levels of delivery and threat controls. Customers continue to recognize the value of Juniper Networks' next generation firewall with intrusion detection and prevention capabilities.

Juniper was also recognized again as the overall market share leader in the SSL VPN market with 27 percent revenue market share. Juniper has been the SSL VPN market share leader since the inception of the market category.

To purchase the "Network Security Appliances and Software Quarterly Worldwide Market Share and Forecasts for 2Q06" report, please contact Larry Howard at (916) 933-3543 or larry@infonetics.com.

About Juniper Networks, Inc.

Juniper Networks is the leader in enabling secure and assured communications over a single IP network. The company's purpose-built, high performance IP platforms enable customers to support many different services and applications at scale. Service providers, enterprises, governments and research and education institutions worldwide rely on Juniper Networks to deliver products for building networks that are tailored to the specific needs of their users, services and applications. Juniper Networks' portfolio of proven networking and security solutions supports the complex scale, security and performance requirements of the world's most demanding networks. Additional information can be found at www.juniper.net.

Juniper Networks, NetScreen and the Juniper Networks logo are registered trademarks of Juniper Networks, Inc. in the United States and other countries.

This press release contains specialized projections, statements and data provided by third parties, including Infonetics Research, Inc. Juniper Networks does not adopt these projections, statements or data, does not warrant or guarantee the accuracy or completeness of such data or statements and does not undertake or assume any duty to update them in the future.