This is the case, for example, of a personal PC connected via an ADSL. Here the IP number is not fixed as it is automatically chosen by the internet access supplier at the moment of the connection.

This IP number cannot be integrated into the IDRIS filters for technical reasons (because the number changes at each connection) and, above all, for reasons of information security.

In consequence, you cannot directly connect to Jean Zay if your machine has a variable IP number.

To avoid this problem, there are solutions provided for teleworking or when on mission.