一,说明 1.1 pfSense是什么 pfSense是基于FreeBSD的.开源中最为可靠(World's Most Trusted Open Source Firewall)的.可与商业级防火墙一战(It has successfully replaced every big name commercial firewall you can imagine in numerous installations around the world)的防火墙. 简单点说pfSense就是一个操作系统