一个国外的VB防火墙，很好懂的。一般情况下还是用得上的。已经反译成中文了。-a foreign VB firewall, a good read. Under normal circumstances or the ebb and flow. Has been translated into anti-Chinese.

本程序用于捕获网络接口的数据包，并进行分析处理，同时提供一些工具，譬如查找网 关，端口扫描等等。 通过此工具用于截获网络数据包，对于数据进行分析，由此进行流量检测，数据分析。-This procedure is used to capture the network interface packet analysis and processing, while providing some tools, for example, find the net Customs, port

监听网络数据流并将具体数据显示出来，可以控制协议，端口-Monitoring network data flow and the specific data display, control protocol, port

官网上下载flow-tools 0.66版本(low-tools is library and a collection of programs used to collect, send, process, and generate reports from NetFlow data. The tools can be used together on a single server or distributed to multiple servers for large deployment