Study of Network Monitoring Theory in Switched Ethernet and its Countermeasures

Network monitoring technique is an important and sensitive technique in the field of network safety. hackers usually make use of TCP/IP protocol's flows to spoof their target . With the combination of Network Monitoring, hacker can intercept and tamper his target's communication data, which is a significant threat to today's network security. This paper gives an analysis on the Network Monitoring Theory in Switched Ethernet and puts forward several Countermeasures.