How to enable faillock using authconfig

Solution Verified - Updated -


  • Red Hat Enterprise Linux 7 (RHEL 7)


  • Executing authconfig command removes the faillock entries from PAM files.
  • Configure faillock for persistent settings in PAM files.


  • Enable faillock using authconfig command.
# authconfig --enablefaillock --faillockargs="deny=6 unlock_time=1200" --update

Note :
- For details of faillock arguments, refer man page pam_faillock.
- Above configuration places below line in file /etc/pam.d/password-auth-ac under password stack. This is not the right place, it needs to be corrected manually by referring /etc/pam.d/system-auth. Bug Reference

# auth        required authfail deny=6 unlock_time=1200
  • authconfig command updates file /etc/sysconfig/authconfig.
 # grep -i faillock /etc/sysconfig/authconfig 
 FAILLOCKARGS="deny=6 unlock_time=1200"

Root Cause

  • Faillock is not enabled in file /etc/sysconfig/authconfig .
# grep USEFAILLOCK /etc/sysconfig/authconfig

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