sniffer（国外英文资料）.doc

sniffer（国外英文资料） sniffer Encyclopedia card Sniffer, which translates as a Sniffer, is a web-based analysis based on passive listening. Using this technique, you can monitor the state of the network, the data flow, and the information transmitted over the network. directory Introduction to the Principle network technology and equipment introduction Principle of network monitoring classification The purpose of network monitoring Product introduction Network security The OSI total protocol is decoded in seven layers The commercial application of Sniffer The expansion of the Sniffer application Monitor network traffic profiles with Sniffer Principle network technology and equipment introduction Principle of network monitoring classification The purpose of network monitoring Product introduction Network security The OSI total protocol is decoded in seven layers The commercial application of Sniffer Sniffers extensions app USES Sniffer to monitor web traffic to edit the profile When information is transmitted over the network in clear text, it can be attacked using network monitoring. By setting up the network interface in the listening mode, you can intercept the flow of information from the Internet. Sniffer technology is often hackers to intercept the users password, it is said that a backbone router network segment was once the hackers, and to a large number of user password Sniffer. However, the technique of Sniffer is widely used in various fields such as network fault diagnosis, protocol analysis, application performance analysis and network security. Edit this section principle The principles and applications of Sniffer are described in detail below. Sniffer principle Introduction of network technology and equipment Before describing the concept of Sniffer, you first need to talk about some basic concepts of LAN devices. The data is transmitted on the network by a small unit called Frame (Frame), which is composed of several parts, and different parts perform diffe