Abstract: In response to security concerns caused by the increasing popularity of the Linux kernel domestic operating systems, while the network security applications lacked, analyse the dual stack technology of IPv4 to IPv6 transition technology, study the Linux kernel network stack structure, use the Linux kernel Netfilter framework, combine with the white list strategy, design and implement a host network management system.This system achieve the purpose to management and control the dual stack host network data. Experiments show that the system can be nondistinctivet control the two kinds network data flow, to facilitate the network security management of Linux host and thus improve the network security.