Re:Microsoft says mandatory password changing is “ancient an...
by jnwatson on Monday April 19, 2021 @04:30PM
(#26867627)
The excellent (or horrible, depending on which end you're on) pam_pwquality[1] module for Linux allows rather fine-grained enforcement of how much a new password must differ from the old password.
1. https://www.systutorials.com/docs/linux/man/8-pam_pwquality/