Layer 2 tunneling protocol ( l2tp ) , a more secure version of point - to - point tunneling protocol ( pptp ) 第二层隧道协议( l2tp ) ,是一种比点对点隧道协议( pptp )更安全的版本。
This is achieved by allowing the user to tunnel through the internet or another public network using a protocol such as microsoft point - to - point tunneling protocol pptp available with the microsoft windows nt version 4 . 0 or microsoft windows 2000 operating system , or layer two tunneling protocol l2tp available with the windows 2000 operating system 其实现方法是允许用户使用如microsoft windows nt 4 . 0或microsoft windows 2000操作系统中的microsoft点对点隧道协议( pptp )或者windows 2000操作系统中的第二层隧道协议( l2tp ) ,将internet或另一公用网络作为通道。
百科解释
The Point-to-Point Tunneling Protocol (PPTP) is a method for implementing virtual private networks. PPTP uses a control channel over TCP and a GRE tunnel operating to encapsulate PPP packets.