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Juniper Networks Continues to Lead in High-End Firewall/VPN and SSL VPN Markets

SUNNYVALE, Calif., September 20, 2005 - Juniper Networks, Inc. (Nasdaq: JNPR) today announced that Infonetics Research, Inc. has recognized Juniper Networks as the market share leader in the high-end Firewall (FW) and Secure Sockets Layer (SSL) Virtual Private Network (VPN) markets in 2Q05. The September 2005 Infonetics Research report titled "Network Security Appliances and Software Quarterly Worldwide Market Share and Forecasts for 2Q05" states that Juniper Networks garnered 35 percent revenue market share within the high-end (Greater than or equal to $30,000 price band) FW/VPN product category and garnered 36 percent revenue market share within the SSL VPN product category during the second quarter of 2005.

"Juniper continues to successfully generate visibility and high-end revenue by pushing the performance envelope in the VPN/firewall appliance market with their new 30 Gbps appliances. In SSL VPN, the addition of carrier-grade, virtualized SSL VPNs for managed services will help them maintain a leadership position and grow the overall market," said Jeff Wilson, principal analyst for VPNs and Security at Infonetics Research.

To purchase the "Network Security Appliances and Software Quarterly Worldwide Market Share and Forecasts for 2Q05" 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 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.