A method for managing an address in a local area network using an access device allowing access to an extended communication network. The address allows a device of the local area network to communicate with other devices by using the access device. The access device obtains an access control rule to be applied for blocking communication of data packets from at least one start time and until an end time. The access device then sends, to a device of the local area network, a message relating to an address in the local area network associated with the device. The message indicates that the address is no longer valid from the start time. The access device implements at least one action leading to an absence of a valid address for the device of the local area network, as long as the end time of the access control rule is not exceeded.