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Guide to the Secure Configuration of Ubuntu 20.04

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Configure auditd Max Log File Size

    Determine the amount of audit data (in megabytes) which should be retained in each log file. Edit the file <code>/etc/audit/auditd.conf</code>. Add or modify the following line, substituting the co...
    Rule Medium Severity
  • Include Local Events in Audit Logs

    To configure Audit daemon to include local events in Audit logs, set local_events to yes in /etc/audit/auditd.conf. This is the default setting.
    Rule Medium Severity
  • AppArmor profiles mode

    enforce - Set all AppArmor profiles to enforce mode
    complain - Set all AppArmor profiles to complain mode
    Value
  • Ensure AppArmor is installed

    AppArmor provide Mandatory Access Controls.
    Rule Medium Severity
  • Enforce all AppArmor Profiles

    AppArmor profiles define what resources applications are able to access. To set all profiles to enforce mode run the following command: <pre>$ sudo aa-enforce /etc/apparmor.d/*</pre> To list unconf...
    Rule Medium Severity
  • All AppArmor Profiles are in enforce or complain mode

    AppArmor profiles define what resources applications are able to access. To set all profiles to either <code>enforce</code> or <code>complain</code> mode run the following command to set all profi...
    Rule Medium Severity
  • net.ipv6.conf.all.accept_source_route

    Trackers could be using source-routed packets to generate traffic that seems to be intra-net, but actually was created outside and has been redirected.
    Value
  • UEFI GRUB2 bootloader configuration

    UEFI GRUB2 bootloader configuration
    Group
  • net.ipv6.conf.all.forwarding

    Toggle IPv6 Forwarding
    Value
  • systemd-journald

    systemd-journald is a system service that collects and stores logging data. It creates and maintains structured, indexed journals based on logging information that is received from a variety of sou...
    Group

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