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       auditd - The Linux Audit daemon


       auditd [-f] [-l] [-n] [-s disable|enable|nochange]


       auditd  is  the  userspace component to the Linux Auditing System. It’s
       responsible for writing audit records to the disk. Viewing the logs  is
       done  with  the  ausearch  or aureport utilities. Configuring the audit
       rules is done with the auditctl utility. During startup, the  rules  in
       /etc/audit/audit.rules  are  read  by auditctl. The audit daemon itself
       has some configuration options that the admin may  wish  to  customize.
       They are found in the auditd.conf file.


       -f     leave the audit daemon in the foreground for debugging. Messages
              also go to stderr rather than the audit log.

       -l     allow the audit daemon to follow symlinks for config files.

       -n     no fork. This is useful for running off of inittab

              specify when starting if auditd should change the current  value
              for  the  kernel enabled flag. Valid values for ENABLE_STATE are
              "disable", "enable" or "nochange". The default is to enable (and
              disable  when  auditd terminates). The value of the enabled flag
              may be changed during the lifetime  of  auditd  using  ’auditctl


       SIGHUP causes  auditd  to  reconfigure. This means that auditd re-reads
              the configuration file. If there are no syntax errors,  it  will
              proceed  to  implement the requested changes. If the reconfigure
              is successful, a DAEMON_CONFIG event is recorded in the logs. If
              not    successful,    error    handling    is    controlled   by
              space_left_action,  admin_space_left_action,   disk_full_action,
              and disk_error_action parameters in auditd.conf.

              caused  auditd  to  discontinue processing audit events, write a
              shutdown audit event, and exit.

              causes auditd to immediately rotate the logs.  It  will  consult
              the  max_log_size_action  to  see  if it should keep the logs or

              causes auditd to attemp to resume logging. This is usually  used
              after logging has been suspended.


       /etc/audit/auditd.conf - configuration file for audit daemon

       /etc/audit/audit.rules - audit rules to be loaded at startup


       A  boot  param  of audit=1 should be added to ensure that all processes
       that run before the audit daemon starts is marked as auditable  by  the
       kernel. Not doing that will make a few processes impossible to properly

       The audit daemon can receive audit events from other audit daemons  via
       the  audisp-remote  audispd plugin. The audit daemon may be linked with
       tcp_wrappers to control which machines can  connect.  If  this  is  the
       case, you can add an entry to hosts.allow and deny.


       auditd.conf(5), audispd(8), ausearch(8), aureport(8), auditctl(8).


       Steve Grubb