The Research and Implementation of IP Management and Anti-Stolen System in Campus Network
To solve the problem of IP address stolen in campus network, the paper gives an idea of monitoring and managing IP addresses. The system designs and implements an IP-MAC-PORT management plan based on the law of IP stolen. By polling the routers and switches with SNMP, it can get ARP table (IP-MAC) from routers and MAC-PORT table from switches. Therefore, by comparing IP-MAC-PORT information which comes from real-time network with the registered IP-MAC-PORT information, the system decides whether there is IP stolen. If IP stolen event occurred, then the system will find the IP stealer's switch port and close it. According to the test in the Chongqing University's campus network, the system has solved the problem of IP stolen in campus network successfully.