Detecting network topology when negotiating ipsec security...

Details Detecting network topology when negotiating ipsec security... Detecting network topology when negotiating ipsec security...

H - Electricity

04

L

H04L 29/06 (2006.01) H04L 29/12 (2006.01)

Patent

CA 2636882

The invention determines if a security association (SA) extends end-to-end between a source node originating a connection and a destination node. In such a case, there will be no ambiguities in routing due to network address translation, and the SA is allowed. In the preferred embodiment, both end nodes of a security connection test themselves and the remote node for gateway status to determine if any ambiguities might exist in network routing due to the presence of a network address translator.

L'invention détermine si une association de sécurité (SA) s'étend de bout en bout entre un noeud source à l'origine d'une connexion et un noeud de destination. Si tel est le cas, il n'existe aucune ambiguïté de routage due à la traduction d'adresse réseau, et la SA est permise. Dans un mode de réalisation préféré, les deux noeuds d'extrémité d'une connexion de sécurité se testent eux-mêmes et testent le noeud distant par rapport à un statut de passerelle pour déterminer si une ambiguïté quelconque existe dans le routage réseau en raison de la présence d'un traducteur d'adresse de réseau.

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