NAT技术及其虚拟网络实验教学研究

随着使用网络的人数不断增多,IP地址的需求也日益增加,在IPv4地址比较匮乏的今天,通过NAT可以使用少量的公用地址将较多私有IP地址的网络连接到Internet。NAT除了能解决了IP地址不足的问题,还能够有效地保护网络内部的计算机免受外部网络的攻击。文章给出仿真软件教学的具体实例,事实证明,在实践教学中,使用Cisco packet tracer模拟器可以提高教学效果。

With the inereasing use of the number of network, demand for the IP address is also increasing, in the IPv4 address shortage of today, through the NAT can use a small amount of public address will be more private IP address to a network to connect to the Internet. NAT in addition to solve the problem of insufficient IP address, but also to effectively protect the network internal computer from the external network attacks. This paper gives the concrete examples of the teaching of simulation software, it is proved that in practice teaching, the teaching effect can be improved by using the packet tracer Cisco simulator.