Passwords are the primary method that Red Hat Enterprise Linux uses to verify a user's identity. This is why password security is so important for protection of the user, the workstation and the network. The single most important thing a user can do to protect his account against a password cracking attack is create a strong password. In Red Hat Enterprise Linux, the pam_cracklib module – Pluggable Authentication Modules (PAM) – can be used to check a password's strength against a set of rules. It can be stacked alongside other PAM modules to configure a custom set of rules for user login. Examples of available options are

The use of screen savers with automatic screen locking is recommended if the Product is not used in a physically secured control room but in the general office environment.