Ubuntu 22.04 The number of allowed failed logins should be set correctly. ^\s*auth\N+pam_unix\.so ^\s*auth\s+(requisite|required)\s+pam_faillock\.so.*preauth.*[\s\S]*^\s*auth.*pam_unix\.so[\s\S]*^\s*auth\s+\[default=die\]\s+pam_faillock\.so\s+authfail ^\s*account\s+required\s+pam_faillock\.so\s*(#.*)?$ ^[\s]*auth[\s]+.+[\s]+pam_faillock.so[\s]+[^\n]*fail_interval=([0-9]+) ^[\s]*fail_interval[\s]*=[\s]*([0-9]+) /etc/pam.d/system-auth 1 /etc/pam.d/system-auth 1 /etc/pam.d/password-auth 1 /etc/pam.d/password-auth 1 /etc/pam.d/common-auth 1 /etc/pam.d/common-auth 1 /etc/pam.d/system-auth 1 /etc/pam.d/password-auth 1 /etc/pam.d/common-account 1 /etc/pam.d/system-auth 1 /etc/pam.d/password-auth 1 /etc/pam.d/common-auth 1 /etc/security/faillock.conf 1