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 on the network, and use the captured network packets where the network topology