Patent ID: 7730527
Filing Date: 2010-06-01
Classification: H04L,H04W

Abstract:
1. Access control procedure of a source terminal to a network comprising an access point for the source terminal, a firewall connected to the access point, and an authentication portal coupled to an authentication database, said authentication portal adapted to place the firewall in an access authorization status in response to an initial access request in a basic mode, the access request originating from the source terminal and including provision of valid authentication data to the portal or the firewall, in the absence of valid authentication data the firewall is placed in an access denial status, the firewall remaining in access authorization status in basic mode in response to the periodic supply, by the source terminal over a token exchange secure channel, of a valid authentication token, and the source terminal selectively communicating in tunnel mode with a destination terminal of the network using a block tunnel, characterized in that at least the periodic supply of the authentication token is performed by a transmission over an OSI Layer 2 level of the token exchange secure channel established between the source terminal and the firewall such that the periodic supply of the authentication token is maintained during a block tunnel mode communication.