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Guide to the Secure Configuration of Ubuntu 22.04

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Remove telnet Clients

    The telnet client allows users to start connections to other systems via the telnet protocol.
    Rule Low Severity
  • TFTP Server

    TFTP is a lightweight version of the FTP protocol which has traditionally been used to configure networking equipment. However, TFTP provides littl...
    Group
  • TFTP server secure directory

    Specify the directory which is used by TFTP server as a root directory when running in secure mode.
    Value
  • Print Support

    The Common Unix Printing System (CUPS) service provides both local and network printing support. A system running the CUPS service can accept print...
    Group
  • Uninstall CUPS Package

    The cups package can be removed with the following command:
    $ apt-get remove cups
    Rule Unknown Severity
  • Disable the CUPS Service

    The cups service can be disabled with the following command:
    $ sudo systemctl mask --now cups.service
    Rule Unknown Severity
  • Configure the CUPS Service if Necessary

    CUPS provides the ability to easily share local printers with other systems over the network. It does this by allowing systems to share lists of av...
    Group
  • Proxy Server

    A proxy server is a very desirable target for a potential adversary because much (or all) sensitive data for a given infrastructure may flow throug...
    Group
  • Disable Squid if Possible

    If Squid was installed and activated, but the system does not need to act as a proxy server, then it should be disabled and removed.
    Group
  • Uninstall squid Package

    The squid package can be removed with the following command:
     $ apt-get remove squid
    Rule Unknown Severity

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