监视从本机流入和流出的IP包，对每个IP包提取出对方IP地址，上层协议（TCP,UDP,ICMP,OTHERS），

对方端口和本地端口（如果上层是TCP或UDP的话），tcp_flags和tcp_seq（如是要上层是TCP的话），

包的方向（流入或流出）。我在实现上加入了对IPv6的支持，以及一个隐藏接口用于提取网络包数据，

因为另一个模块要监控本机发送与接收的email。-Monitor the inflow and outflow from the machine' s IP packets for each IP packet to extract the IP address of the other side, upper layer protocol (TCP, UDP, ICMP, OTHERS), the other port and local port (if the upper level is TCP or UDP, then), tcp_flags and tcp_seq (if so, then to the upper level is TCP), packet direction (inflow or outflow). I am in the realization of adding support for IPv6, as well as a hidden interface for extracting network packet data, because another module to monitor the machine to send and receive email.