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Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide (STIG) V1R9

Rules and Groups employed by this XCCDF Profile

  • Ensure AppArmor is Active and Configured

    Verify that the Apparmor tool is configured to control whitelisted applications and user home directory access control.<br><br> The <code>apparmor...
    Rule Medium Severity
    Show

  • GRUB2 bootloader configuration

    During the boot process, the boot loader is responsible for starting the execution of the kernel and passing options to it. The boot loader allows ...
    Group
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  • Non-UEFI GRUB2 bootloader configuration

    Non-UEFI GRUB2 bootloader configuration
    Group
    Show

  • Set Boot Loader Password in grub2

    The grub2 boot loader should have a superuser account and password protection enabled to protect boot-time settings. <br><br> Since plaintext passw...
    Rule High Severity
    Show

  • UEFI GRUB2 bootloader configuration

    UEFI GRUB2 bootloader configuration
    Group
    Show

  • Set the UEFI Boot Loader Password

    The grub2 boot loader should have a superuser account and password protection enabled to protect boot-time settings. <br><br> Since plaintext passw...
    Rule High Severity
    Show

  • Configure Syslog

    The syslog service has been the default Unix logging mechanism for many years. It has a number of downsides, including inconsistent log format, lac...
    Group
    Show

  • Enable rsyslog Service

    The <code>rsyslog</code> service provides syslog-style logging by default on Ubuntu 20.04. The <code>rsyslog</code> service can be enabled with th...
    Rule Medium Severity
    Show

  • Ensure real-time clock is set to UTC

    Ensure that the system real-time clock (RTC) is set to Coordinated Universal Time (UTC).
    Rule High Severity
    Show

  • Ensure Proper Configuration of Log Files

    The file <code>/etc/rsyslog.conf</code> controls where log message are written. These are controlled by lines called <i>rules</i>, which consist of...
    Group
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  • Ensure remote access methods are monitored in Rsyslog

    Logging of remote access methods must be implemented to help identify cyber attacks and ensure ongoing compliance with remote access policies are b...
    Rule Medium Severity
    Show

  • Network Configuration and Firewalls

    Most systems must be connected to a network of some sort, and this brings with it the substantial risk of network attack. This section discusses th...
    Group
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  • Kernel Parameters Which Affect Networking

    The <code>sysctl</code> utility is used to set parameters which affect the operation of the Linux kernel. Kernel parameters which affect networking...
    Group
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  • Network Related Kernel Runtime Parameters for Hosts and Routers

    Certain kernel parameters should be set for systems which are acting as either hosts or routers to improve the system's ability defend against cert...
    Group
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  • Enable Kernel Parameter to Use TCP Syncookies on Network Interfaces

    To set the runtime status of the <code>net.ipv4.tcp_syncookies</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv4.t...
    Rule Medium Severity
    Show

  • Uncomplicated Firewall (ufw)

    The Linux kernel in Ubuntu provides a packet filtering system called netfilter, and the traditional interface for manipulating netfilter are the ip...
    Group
    Show

  • Install ufw Package

    The ufw package can be installed with the following command: 
    $ apt-get install ufw
    Rule Medium Severity
    Show

  • Verify ufw Enabled

    The ufw service can be enabled with the following command: 
    $ sudo systemctl enable ufw.service
    Rule Medium Severity
    Show

  • Only Allow Authorized Network Services in ufw

    Check the firewall configuration for any unnecessary or prohibited functions, ports, protocols, and/or services by running the following command: <...
    Rule Medium Severity
    Show

  • ufw Must rate-limit network interfaces

    The operating system must configure the uncomplicated firewall to rate-limit impacted network interfaces.
    Rule Medium Severity
    Show

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