Zener (www.zener.io) is a security company, building a highly scaleable, distributed, Software Defined Firewall for the modern datacenter. Zener is a distributed Software Defined Firewall (SDF) solution, that protects assets (data and applications) locally. This is done by enforcing firewall rules based on a simple, dynamic and unified rule sets defined in the Zener Rule Engine. Built by the team behind the battle-hardened configuration management framework that currently manages over 10 million Linux-based systems, Zener offers a real world, scalable and efficient solution to add a significant layer of security to your infrastructure, and enable the move to a more flexible, scalable and hybrid network solution.