Linux : PAM : Pluggable Authentication Module

https://www.redhat.com/sysadmin/pluggable-authentication-modules-pam
https://www.tecmint.com/use-pam_tally2-to-lock-and-unlock-ssh-failed-login-attempts/

sudo pam_tally2 -u 703247699 --reset

Config Files for PAM
/etc/pam.d
/etc/security

sudo   pam_tally2   -u    userID123
---------------------------------------------------------
Login           Failures Latest failure     From
userID123    0