On the Trend and Applied Research of the VPDN
LI Jiang-li · Training and Research · 2003
VPDN has the following advantages: quick and easy in building the network; cutting down the investment in building a network; reducing its operating cost; simplifying the procedure of its maintenance and management. A logic tunnel on the public route can be built and network layers can be locked in cipher through the application of the international standard network security technology so that the data won' t be altered and usurped. It can also guarantee the security and integrity of users data.However some problems remain unsolved in the widespread of VPDN. The author intends to discuss about the trend, scheme, the problems unsolved of UPDN.