Method for distinguishing and blocking off network node
AssigneeSofnet Corporation
InventorKUN-JUNG LEE
Life of this patent
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Abstract
The invention provides a method for distinguishing and blocking off a network node. The method includes a packet receiving step and a packet distinguishing processing step. The packet receiving step is provided for receiving an ARP packet from a network node within a network segment. The packet distinguishing processing step is provided for distinguishing whether the network node is authorized or not by having an internet protocol address and a media access control address of the ARP packet to be compared with a permission list, and then for permitting the network node to connect with the network segment or for blocking off the network node. Thereby the network system can be protected and the safety of the network in use increases.
Claims8
A method for distinguishing and blocking off a network node, for distinguishing whether the network node is authorized or not according to an ARP packet within a network segment and for blocking off the network node which is distinguished as unauthorized, the method comprising steps of:
- A packet receiving step for receiving the ARP packet from the network node within the network segment;
- and
- A packet distinguishing processing step for distinguishing whether the network node is authorized or not by having an internet protocol address and a media access control address of the ARP packet to be compared with a permission list, and then for permitting the network node to connect with the network segment while the network node is distinguished as authorized or for blocking off the network node while the network node is distinguished as unauthorized.
Dependencies are inferred from the claim text.