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NIST National Checklist Program Security Guide

Rules and Groups employed by this XCCDF Profile

  • Verify Proper Storage and Existence of Password Hashes

    By default, password hashes for local accounts are stored in the second field (colon-separated) in <code>/etc/shadow</code>. This file should be re...
    Group
  • Verify All Account Password Hashes are Shadowed

    If any password hashes are stored in <code>/etc/passwd</code> (in the second field, instead of an <code>x</code> or <code>*</code>), the cause of t...
    Rule Medium Severity
  • All GIDs referenced in /etc/passwd must be defined in /etc/group

    Add a group to the system for each GID referenced without a corresponding group.
    Rule Low Severity
  • Prevent Login to Accounts With Empty Password

    If an account is configured for password authentication but does not have an assigned password, it may be possible to log into the account without ...
    Rule High Severity
  • Restrict Root Logins

    Direct root logins should be allowed only for emergency use. In normal situations, the administrator should access the system via a unique unprivil...
    Group

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