跳端口技术及其在网络隐蔽通信中的应用

跳端口技术是近年来出现的一种新型信息隐藏技术,在网络隐蔽通信中有着很好的发展和应用前景.首先分析了跳端口技术的基本原理和关键技术,在此基础上,利用Windows Sockets技术和VC++编程,设计并实现了基于会话的跳端口系统.实验结果表明:跳端口技术使数据报文扩散到网络背景数据噪声中,从而有效地减少了黑客针对特定端口的攻击,同时系统的抗DOS攻击能力较定端口系统有较明显改善.

Application of port hopping technology in network covert communication

Port hopping is a new type of information hiding technology emerged in recent years,and it has very prosperous development and application prospect in the network covert communication.The port hopping technology features the non-fixed sending and receiving ports,which hop randomly and simultaneously in communication.Compared to the traditional communication with fixed port,the communication using the port hopping technology makes it difficult to discover the port of communication,and even if the port is discovered by the enemy,the communication has already been transferred to another port.Therefore the port hopping is more covert than the traditional technology,and communication using it is difficult to be intercepted.This paper analyzes the basic principles and key technologies of the port hopping,carries on modeling analysis on the port hopping process,and assesses theoretically the system security through the models of the port security,the system availability and the system confidentiality.On this basis,by the use of Windows Sockets technology and VC+ + programming,it designs and implements the session-based port hopping system.Experiment results show that the system successfully makes the data packets diffuse in the background noise of network through the port hopping technology,and effectively reduces the hacker attacks in view of the specific port.At the same time the viability of the system is improved compared with that of the fixed port system.