4Jalal R. Net Security: IPSec vs. SSL[C]. Proceedings of the IEEE SoutheastCon-2004 "Engineering Connects", 2004:351-358.
5Ken A. SSL VPN Gateways: A New Approach to Secure Remote Access[J]. Database and Network, 2003, 33 (6): 3-5.
6Cai Longzheng, Yu Shengsheng, Zhou Jingli. Research and Implementation of Remote Desktop Protocol Service over SSL VPN[C]. IEEE International Conference on SCC'04, 2004.
