L'opération SSH a chronométré Mac
$ ping server_address
$ traceroute server_address
$ ssh -v login_name@server_address
# Please check that you are connecting
# to your targeted server with the right network interface.
# If you suspect a legitimate or accidental filtering,
# you will be able to diagnose it with:
$ nmap -Pn -p22 server_address
Salo Hopeless