网络转发器 (说明书和代码与文档) 用于运行在可以跨两个网段的机器上用来作为一个TCP应用层的一个桥，当然也可以用来在应用层截获数据和分析数据 -network transponder (specifications and code and documentation) can be used to run across the network of the two machines used as a TCP application layer of a bridge, of course, can be used in application-layer data interception and analysis of data