Juniper NetScreen 50 Secure Access Rack-Mountable Security Appliance NS-050-001. The Juniper Networks NetScreen 50 Baseline appliances are integrated security devices for enterprise branch and remote offices, as well as small to medium-sized companies. They provide solutions for perimeter security with multiple DMZs, VPNs for wireless LAN security, or protection of internal networks. The NetScreen 50 Baseline appliance is a high-performance integrated security appliance, offering 170 Mbps of firewall and 45 Mbps of 3DES or AES VPN performance, with support for 48,000 concurrent sessions, and 150 VPN tunnels.