最初形态的防火墙只是部署在企业网络的最边缘,所以叫做“边缘防火墙”。这种防火墙形式简单,但是现在来看,它的安全性也受到了极大的质疑。有一定安全需求的用户开始选择其他形式的防火墙来保护自己的网络,其中有一种叫做“嵌入型防火墙”。 The initial form of the firewall is deployed on the very edge of the corporate network, so called “edge firewall.” The form of this firewall is simple, but for now, its security has also been greatly questioned. Users with some security needs begin to choose other forms of firewalls to protect their networks, one of which is called “embedded firewalls.”