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How to lock out a user to login a system after a set number of failed attempts in Red Hat Enterprise Linux using pam_tally/pam_tally2

Solution Verified - Updated -

Issue

  • How to lock out a user to login a system after a set number of failed attempts
  • How to limit/restrict user(s) from login after failed login attempts
  • How to lockout a user to login on server using pam_tally/pam_tally2 module
  • How do I configure PAM stack using pam_tally.so/pam_tally2.so for blocking user login using (via) ssh after failed login attempts ?
  • Is there any way to enable account lockout after 3 failed login attempts in RHEL ?
  • Configure system-auth-ac/system-auth and password-auth-ac/password-auth with pam_tally/pam_tally2
  • Configure pam_tally/pam_tally2 in RHEL system for user account lockout
  • Implementing account lockout using pam_tally

Environment

  • Red Hat Enterprise Linux 3
  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • pam_tally / pam_tally2

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