网络地址转换技术的实现

Implementation of Network Address Translation

网络地址转换技术将多个私网地址转换为少量的公网地址,是一种处理IPv4地址空间不足的方法。在内部主机和外界通信时,通过边界路由器或防火墙,将内部的私网地址转换成公网地址进行访问。传统的NAT实验设备单一,为了在实验中全面地理解网络地址转换技术在不同设备上的实现,选择了具有代表性的华为防火墙和思科路由器。通过在防火墙和路由器上的具体配置,说明网络地址转换技术在不同设备上的实现,总结了网络地址转换技术的配置思路,具有一定的应用价值。

Network address translation technology converts multiple private addresses into a small number of public addresses,which is a way to deal with the shortage of IPv4 address space.When the internal host communicates with the outside world,the internal private network address is converted into the public network address through the boundary router or firewall.Traditional NAT experimental equipment is single.In order to fully understand the implementation of network address translation technology on different devices,the Huawei firewall and Cisco router is selected.Through the specific configuration of router and firewall,the paper illustrates the realization of network address translation on different devices,summarizes the configuration ideas of network address translation technology.It has certain application value.