By default rules for time/port access are taken from config file /etc/security/time.conf.
If Linux PAM is compiled with audit support the module will report when it denies access.
Only the account type is provided.
#%PAM-1.0 # # apply pam_time accounting to login requests # login account required pam_time.so
time.conf(5), pam.d(5), pam(7).
pam_time was written by Andrew G. Morgan <email@example.com>.