METHOD FOR CONTROLLING ACCESS OF AN ORIGINATING TERMINAL TO A NETWORK USING A BLOCKING-MODE TUNNEL, AND COMPUTER PROGRAMMES FOR IMPLEMENTING SAME

摘要

The invention concerns in particular a method for controlling access of an originating terminal (T_SOUR) comprising a firewall (PF) and an authentication portal, said portal setting and maintaining the firewall in an access-authorizing state in response to a valid initial access request in basic mode coming from the originating terminal, and to the subsequent periodic supply of a valid authentication token, the originating terminal being further capable of communicating in tunnel mode with a destination terminal of the network via a blocking tunnel (M_BLQ). The invention is characterized in that the periodic supply of the authentication token is performed by transmission on an unblocked port of the level 3 layer of the OSI model, such that the token continues to be supplied during a communication in blocking tunnel mode.