基于 Linux 的地址转换技术探讨和实现 摘 要：伴随着当今网络技术的蓬勃发展，人们对于 IP 地址的需求的数量猛增，然而对于已经分配的所剩无几的 IPv4 地址，对于网络的发展必定是一个瓶颈。IPv6 地址的出现使得人们看到了未来的希望，但是由于技术的不完善，从 IPv4 到 IPv6 的过渡需要相当的一段时间。在这段时间里，NAT 技术的出现很好地解决了所剩无几的 IP 地址对于日益增长的网络需求所带来的限制。NAT 技术将因特网和局域网地址互相结合，使局域网内的计算机在访问因特网时使用因特网合法的地址，使得更多的的计算机在局域网中增长而不会对因特网 IP 地址带来巨大的压力。对于因特网上的用户可以访问局域网中指定发布的服务，与此同时还能够有效地避免来自因特网的攻击，隐藏了计算机的真实 IP 地址，保护网络内部的计算机。NAT 是解决 IP 地址匮乏问题的一种行之有效的技术，本文探讨了 NAT 技术的原理以及在 Linux 系统中的实现方案。关键词：Linux； IPv4； NAT 技术Address Translation Technology Research and Implementation Based on Linux ABSTRACT:Along with the development of network technology, the number of people in demand for IP addresses is more than before, but for the few IPv4 addresses have been allocated. But for the development of the network must be a bottleneck. IPv6 addresses appear makes people see hope for the future, but because of the imperfect technology, the transition from the IPv4 to IPv6 requires a long time. During this time, NAT technology solves the limitations running out of IP addresses the growing demand for network brings. NAT technology of the Internet and LAN address with each other, so that the computer on the LAN using the Internet legitimate address when accessing the Internet, making the computer more growth rather than be in the LAN IP address of the Internet has brought tremendous pressure. For users on the Internet can access the published services specified in the LAN, while also able to effectively...
