以Wireshark为平台，观察并分析网了络中传输的数据报的封装，测试了部分帐号与密码在网络上的传送方式，并利用捕获的网络数据包分析出了所在网络的拓扑结构-In Wireshark as a platform to observe and analyze the net package of the network to transmit the data reported, the test part of the username and password are transmitted