NetScreen Technologies
| Company type | Division | 
|---|---|
| Industry | IT security, Computer software, Computer hardware | 
| Founded | 1997 | 
| Defunct | 2004 | 
| Fate | Acquired by Juniper Networks | 
| Headquarters | , United States | 
| Key people | Ken Xie, CTO, CEO, and Co-Founder, Yan Ke, Co-Founder, Feng Deng, Co-Founder, Robert Thomas, CEO, Anson Chen, VP R&D, Nir Zuk, CTO | 
| Products | Network security and access solutions and appliances. | 
| Parent | Juniper Networks | 
| Website | www.juniper.net | 
NetScreen Technologies was an American technology company that was acquired by Juniper Networks for US$4 billion stock for stock in 2004.
NetScreen Technologies developed ASIC-based Internet security systems and appliances that delivered high performance firewall, VPN and traffic shaping functionality to Internet data centers, e-business sites, broadband service providers and application service providers. NetScreen was the first firewall manufacturer to develop a gigabit-speed firewall, the NetScreen-1000.