An Enterprise Safety Gateway Based on Netfilter/Iptables

摘要

A Design of the enterprise safety gateway based on Linux built-in standard framework of Netfilter/Iptables was put forward, the key technology was analysed, then a normative and precise solution based on shell script which closer to the enterprises practical application was proposed. The firewall on network layer can not only protect the trusted region of the enterprise, but also can custom and achieve the interflow inside and outside the enterprise through MASQUERADE and DNAT.