Abstract: A method for authenticating access via a communication terminal, before a server is disclosed. The method includes, subsequently to the transmission by an access application of the communication terminal, to the server, of a connection request: transforming a variable element, received from the server, using transformation materials obtained upon a subscription before the server, outputting a transformed element; transmitting to the server, an identifier associated to the access and to the transformed element; and receiving an authentication of the access, originating from the server taking the transformed element into account.

Abstract: A method for authenticating a client terminal by a target server. The method includes: the client terminal authenticates itself with an authentication server; the target server authenticates itself with the authentication server; the authentication server and the target server share a password for the client terminal; the authentication server transmits the password to the client terminal; the client terminal transmits the password to the target server; and the target server determines whether or not there is a correspondence between the password shared with the authentication server and the password transmitted by the client terminal, and if the correspondence between passwords exists, the client terminal is authenticated by the target server.

Abstract: The disclosure relates to an alarm system comprising a plurality of detectors, each configured to detect an event in an environment and to emit an event detection signal, and a plurality of alarm signal emitters, each configured to emit at least one alarm signal in case of the detection of an event, the detectors and the emitters being linked to one another, wherein each of the emitters is configured to emit a plurality of distinct alarm signals. In case of the detection of an event by a first detector, a first identifier is assigned to at least one first emitter, the closest to the first detector out of the plurality of emitters, and an alarm generation instruction is transmitted to the first emitter with the first identifier, to activate the first emitter with a first alarm signal which is a function of the first identifier.

Abstract: The disclosure relates to an alarm system comprising a plurality of detectors, each configured to detect an event in an environment and to emit an event detection signal, and a plurality of alarm signal emitters, each configured to emit at least one alarm signal in case of the detection of an event, the detectors and the emitters being linked to one another, wherein each of the emitters is configured to emit a plurality of distinct alarm signals. In case of the detection of an event by a first detector, a first identifier is assigned to at least one first emitter, the closest to the first detector out of the plurality of emitters, and an alarm generation instruction is transmitted to the first emitter with the first identifier, to activate the first emitter with a first alarm signal which is a function of the first identifier.

Abstract: A method of processing requests, which is implemented by a proxy server of resolution of domain names of a first communications network. The first communications network is accessible by a user terminal via a communications tunnel set up over a second communications network. The processing method includes, on receiving a domain name resolution request coming from the terminal and sent via the communications tunnel: obtaining an identifier of the user from information contained in a field of the request; using the identifier of the user to determine whether the user is or is not authorized to access the domain name; if the user is authorized to access the domain name, sending an IP address to the terminal via the communications tunnel, the IP address corresponding to the domain name and being accessible to the terminal via the second communications network; else, rejecting the request from the terminal.

Abstract: A method for authenticating a client terminal by a target server. The method includes: the client terminal authenticates itself with an authentication server; the target server authenticates itself with the authentication server; the authentication server and the target server share a password for the client terminal; the authentication server transmits the password to the client terminal; the client terminal transmits the password to the target server; and the target server determines whether or not there is a correspondence between the password shared with the authentication server and the password transmitted by the client terminal, and if the correspondence between passwords exists, the client terminal is authenticated by the target server.

Abstract: A method of processing requests, which is implemented by a proxy server of resolution of domain names of a first communications network. The first communications network is accessible by a user terminal via a communications tunnel set up over a second communications network. The processing method includes, on receiving a domain name resolution request coming from the terminal and sent via the communications tunnel: obtaining an identifier of the user from information contained in a field of the request; using the identifier of the user to determine whether the user is or is not authorized to access the domain name; if the user is authorized to access the domain name, sending an IP address to the terminal via the communications tunnel, the IP address corresponding to the domain name and being accessible to the terminal via the second communications network; else, rejecting the request from the terminal.