基于IP网络及其协议的公共性质，使得VoIP天生就具备相对于传统电话网而言更易受到攻击的特质。不过，通过采取一个仔细规划的、多层次的VoIP网络防护措施，企业就可以让VoIP网络的安全程度赶上甚至是超过传统的电话系统-IP-based network and its public nature of the agreement, making VoIP inherently possess relative to the traditional phone network more vulne

UPnP technology provides an effective foundation for networked devices that need simple, seamless interoperability for the home, office, and public domain. The UPnP device architecture enables connectivity of devices of all form factors. It provides

获取公网IP并远程发送到FTP服务器上，可以配合VBS和BAT形成一个远程木马。-And remote access to the public network IP sent to an FTP server, a remote Trojan can with the VBS and BAT.