Apps similar to Juniper Contrail include pfSense, which is open source with a free version. Other options are OpenContrail, VyOS and Smoothwall. In total there are four Firewalls like Juniper Contrail for Linux and self-hosting.
pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more.
United States
OpenContrail is an Apache 2.0-licensed project that is built using standards-based protocols and provides all the necessary components for network virtualization–SDN controller, virtual router, analytics engine, and published northbound APIs.
The SmoothWall Open Source Project was set up to develop and maintain SmoothWall Express - a Free firewall that includes its own security-hardened GNU/Linux operating system and an easy-to-use web interface.
United Kingdom
