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Guide to the Secure Configuration of Ubuntu 20.04

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Transport Layer Security Support

    Support for Transport Layer Security (TLS), and its predecessor, the Secure Sockets Layer (SSL), is included in Red Hat Enterprise Linux in the Ope...
    Group
  • Only Allow DoD PKI-established CAs

    The operating system must only allow the use of DoD PKI-established certificate authorities for verification of the establishment of protected sess...
    Rule Medium Severity
  • File Permissions and Masks

    Traditional Unix security relies heavily on file and directory permissions to prevent unauthorized users from reading or modifying files to which t...
    Group
  • Verify Permissions on Important Files and Directories

    Permissions for many files on a system must be set restrictively to ensure sensitive information is properly protected. This section discusses impo...
    Group
  • Verify permissions of log files

    Any operating system providing too much information in error messages risks compromising the data and security of the structure, and content of err...
    Rule Medium Severity

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