Network security devices and methods

H - Electricity – 04 – L

Patent

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Details

H04L 9/00 (2006.01)

Patent

CA 2454203

An OSI layer 2 network device on the edge of a network (202) such as a SAN is configured to replace the original source address (204) of traffic entering the network with a known identifier or address, which is used to signify that entry point as the traffic source to the other nodes of the network. Nodes of the network recognize the new source address as a valid source address. The network device also maintains state (e.g., association of original source address with new source address/identifier) so as to translate addresses (206) to enable reply traffic to be sent back to the original sender (212).

L'invention concerne un dispositif de réseau à couche OSI 2 situé sur le bord d'un réseau, tel qu'un réseau de stockage (SAN), configuré pour remplacer l'adresse source originale (204) de trafic pénétrant dans le réseau par un identificateur ou une adresse connue, ce qui permet de désigner ce point d'entrée comme source de trafic pour les autres noeuds du réseau. Les noeuds du réseau reconnaissent la nouvelle adresse source comme adresse source valide. Le dispositif de réseau conserve également l'état (l'association d'une adresse source originale avec un nouvel identificateur/adresse source, par exemple), de sorte à traduire les adresses (206) pour permettre le renvoi du trafic de réponse vers l'expéditeur original (212).

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