当我们津津乐道于体验防火墙、防毒网关、IDS、VPN等设备给我们带来的安全感时,往往却忽略了“后院起火”所带来的严重后果。一台未经授权可能带有安全隐患的笔记本电脑,甚至是一个不起眼的U盘,一旦接入局域网中的某个端点或者某台电脑上时,相对于防火墙等设备在网络边界的拦截过滤作用来说,其所可能带来的安全隐患,更是不堪设想。所谓的坚不可摧的堡垒,往往就是从内部轻易瓦解! When we talked about the security afforded us by experiencing firewalls, anti-virus gateways, IDSs, VPNs and other devices, we often overlooked the serious consequences of “backyard fire ”. An unauthorized laptop may have a security risk, or even a humble U disk, once connected to an endpoint on a LAN or a computer, relative to the firewall and other equipment at the network boundary filter Role, its potential security risks, it is even more disastrous. The so-called impregnable fortress is often easily collapsed from the inside!