3.6.3 Viewing Failed Operating System Password Attempts
Use the faillock operating system utility to view failed
                login attempts.
                  
For example, to see the failed login attempts for the
                    celladmin user:
                  
# faillock --user celladmin
celladmin:
When                Type  Source                                           Valid
2022-11-06 18:23:18 RHOST xxx.xxx.xxx.xxx                                      V
2022-11-06 18:23:23 RHOST xxx.xxx.xxx.xxx                                      V
2022-11-06 18:23:27 RHOST xxx.xxx.xxx.xxx                                      V
In the example output, xxx.xxx.xxx.xxx represents the IP address that is the source of the login failure.