Guide to the Secure Configuration of Ubuntu 16.04
Rules, Groups, and Values defined within the XCCDF Benchmark
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Authselect profile
Specify the authselect profile to selectValue -
Warning Banners for System Accesses
Each system should expose as little information about itself as possible. <br><br> System banners, which are typically displayed just before a logi...Group -
Login Banner Verbiage
Enter an appropriate login banner for your organization. Please note that new lines must be expressed by the '\n' character and special characters ...Value -
MotD Banner Verbiage
Enter an appropriate login banner for your organization. Please note that new lines must be expressed by the '\n' character and special characters ...Value -
Remote Login Banner Verbiage
Enter an appropriate login banner for your organization. Please note that new lines must be expressed by the '\n' character and special characters ...Value -
Implement a GUI Warning Banner
In the default graphical environment, users logging directly into the system are greeted with a login screen provided by the GNOME Display Manager ...Group -
Account Lockouts Must Persist
By setting a `dir` in the faillock configuration account lockouts will persist across reboots.Rule Medium Severity -
Protect Accounts by Configuring PAM
PAM, or Pluggable Authentication Modules, is a system which implements modular authentication for Linux programs. PAM provides a flexible and confi...Group -
Password Hashing algorithm
Specify the system default encryption algorithm for encrypting passwords. Defines the value set as ENCRYPT_METHOD in /etc/login.defs.Value -
remember
The last n passwords for each user are saved in <code>/etc/security/opasswd</code> in order to force password change history and keep the user from...Value -
Disallow Configuration to Bypass Password Requirements for Privilege Escalation
Verify the operating system is not configured to bypass password requirements for privilege escalation. Check the configuration of the "/etc/pam.d/...Rule Medium Severity -
Set Lockouts for Failed Password Attempts
The <code>pam_faillock</code> PAM module provides the capability to lock out user accounts after a number of failed login attempts. Its documentati...Group -
fail_deny
Number of failed login attempts before account lockoutValue -
faillock directory
The directory where the user files with the failure records are keptValue -
fail_interval
Interval for counting failed login attempts before account lockoutValue -
fail_unlock_time
Seconds before automatic unlocking or permanently locking after excessive failed loginsValue -
tally2_unlock_time
Seconds before automatic unlocking or permanently locking after excessive failed loginsValue -
faildelay_delay
Delay next login attempt after a failed loginValue -
pwhistory_remember
Prevent password re-use using password history lookupValue -
PAM pwhistory remember - control flag
'Specify the control flag required for password remember requirement. If multiple values are allowed write them separated by commas as in "required...Value
Node 2
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