faillog - journal des échecs de connexion

       /var/log/faillog maintains a count of login failures and the limits for
       each account.

       The file contains fixed length records, indexed by numerical UID. Each
       record contains the count of login failures since the last successful
       login; the maximum number of failures before the account is disabled;
       the line on whiche the last login failure occurred; the date of the
       last login failure; and the duration (in seconds) during which the
       account will be locked after a failure.

       La structure du fichier est la suivante :

           struct    faillog {
                short   fail_cnt;      /* compteur des échecs */
                short   fail_max;      /* nb max avant désactivation */
                char    fail_line[12]; /* ligne du dernier échec */
                time_t  fail_time;     /* date du dernier échec */
                long    fail_locktime;};


           Journal des échecs de connexion.