![]() The related configuration file is /etc/security/nf. It is backwards compatible with pam_cracklib. Next is pwquality (PAM)īased upon the foundation of Cracklib, the pwquality module has similar functionality. Other settings include the usage of special characters, like the usage of capitals and numbers. One of these items is the minimum password length. With the configuration options it provides, it allows the administrator to define a password policy. Primary focus was on testing passwords, preventing users from choosing too simple passwords. Maybe the first module for configuring password settings was the cracklib module. Modern Linux distributions will no longer use this setting and prefer PAM, or pluggable authentication modules. ![]() The related setting is PASS_MINLEN and already tells us it is about the minimum length of a password. ![]() The first area where you can set a password length is in /etc/fs. As part of Linux system hardening, you don’t want your passwords to be cracked too quickly by modern password crackers. This prevents users from choosing easy passwords. One of the options to improve password security is by setting a minimum length.
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