Ip management method and apparatus for protecting/blocking specific ip address or specific device on network

The present invention relates to an IP management method and device for protecting / blocking a specific IP address or specific devices via network. The present invention, in the IP management method for protecting a specific IP address on the network, (a) detecting an ARP (Address Resolution Protocol) packet transmitted on the network; (B) detecting a sender address from the ARP packet; (C) determining whether a transmitting IP (Internet Protocol) address of the sender address is set as a protection IP; (D) if it is determined in said step (c), that the source IP address is set to the protection IP, specified by the transmission MAC (Media Access Control) address of the sender address that is available to the source IP address, MAC address, and determining whether or not the same; (E) transmitting the ARP packet operation that is used if the determination result, the transmission MAC address of step (d) different from the designated MAC address, the IP address, the transmission group as the sender's address; And (f) in the network to compensate the packet is actually used MAC address of the transmission IP address compensation such that the specified MAC address, characterized in that it comprises the step of transmitting to all the devices on the network to protect a particular IP address, It provides an IP management method and apparatus for performing them.