Transmission of Packets Relating to a Processing Rule

A mobile terminal capable of transmitting a packet stream generated by an application installed in the mobile terminal and intended to be transmitted over a communication network managed by an operator, the mobile terminal comprising:

• a processor;
• and
• a non-transitory computer-readable medium comprising code instructions stored thereon which when executed by the processor configure the mobile terminal to perform acts comprising:
• obtaining a packet, called a first packet,
• transmitting a request message to a security module installed in the terminal, the request message comprising at least a part of the first packet,
• receiving a response message from the security module, the response message comprising an instruction,
• responsive to said instruction authorizing transmission of the first packet, transmitting the first packet, and
• responsive to said instruction authorizing transmission of a second packet which differs from the first packet, based on said at least a part of the first packet and conforming to at least one processing rule, transmitting the second packet.