faillog

faillog - display faillog records or set login failure limits

Beschreibung

faillog displays the contents of the failure log database (/var/log/faillog). It can also set the failure counters and limits. When faillog is run without arguments, it only displays the faillog records of the users who had a login failure.

Aufruf

faillog [options]

Optionen

Unix	GNU	Parameter	Beschreibung
-a	--all		Display (or act on) faillog records for all users having an entry in the faillog database. The range of users can be restricted with the -u option. In display mode, this is still restricted to existing users but forces the display of the faillog entries even if they are empty. With the -l, -m, -r, -t options, the users' records are changed, even if the user does not exist on the system. This is useful to reset records of users that have been deleted or to set a policy in advance for a range of users.
-h	--help		Display help message and exit.
-l	--lock-secs	SEC	Lock account for SEC seconds after failed login. Write access to /var/log/faillog is required for this option.
-m	--maximum	MAX	Set the maximum number of login failures after the account is disabled to MAX. Selecting a MAX value of 0 has the effect of not placing a limit on the number of failed logins. The maximum failure count should always be 0 for root to prevent a denial of services attack against the system. Write access to /var/log/faillog is required for this option.
-r	--reset		Reset the counters of login failures. Write access to /var/log/faillog is required for this option.
-R	--root	CHROOT_DIR	Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory. Only absolute paths are supported.
-t	--time	DAYS	Display faillog records more recent than DAYS.
-u	--user	RANGE	Display faillog record or maintains failure counters and limits (if used with -l, -m or -r options) only for the specified user(s). The users can be specified by a login name, a numerical user ID, or a RANGE of users. This RANGE of users can be specified with a min and max values (UID_MIN-UID_MAX), a max value (-UID_MAX), or a min value (UID_MIN-). When none of the -l, -m, or -r options are used, faillog displays the faillog record of the specified user(s).

Anwendung

Problembehebung

CAVEATS

faillog only prints out users with no successful login since the last failure. To print out a user who has had a successful login since their last failure, you must explicitly request the user with the -u flag, or print out all users with the -a flag.

Konfiguration

Dateien

/var/log/faillog

Failure logging file

Anhang

Siehe auch

• login(1)
• faillog(5)

• Faillog

Dokumentation

shadow-utils 4.13 03/23/2023 FAILLOG(8)