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CIS Ubuntu 22.04 Level 1 Workstation Benchmark

Rules and Groups employed by this XCCDF Profile

  • Ensure Mail Transfer Agent is not Listening on any non-loopback Address

    Mail Transfer Agents (MTA), such as sendmail and Postfix, are used to listen for incoming mail and transfer the messages to the appropriate user or...
    Rule Medium Severity
  • Configure SMTP For Mail Clients

    This section discusses settings for Postfix in a submission-only e-mail configuration.
    Group
  • Disable Postfix Network Listening

    Edit the file <code>/etc/postfix/main.cf</code> to ensure that only the following <code>inet_interfaces</code> line appears: <pre>inet_interfaces =...
    Rule Medium Severity
  • NFS and RPC

    The Network File System is a popular distributed filesystem for the Unix environment, and is very widely deployed. This section discusses the circ...
    Group
  • Uninstall nfs-kernel-server Package

    The nfs-kernel-server package can be removed with the following command:
    $ apt-get remove nfs-kernel-server
    Rule Low Severity
  • Disable All NFS Services if Possible

    If there is not a reason for the system to operate as either an NFS client or an NFS server, follow all instructions in this section to disable sub...
    Group
  • Disable Services Used Only by NFS

    If NFS is not needed, disable the NFS client daemons nfslock, rpcgssd, and rpcidmapd. <br><br> All of these daemons run with elevated privileges, a...
    Group
  • Uninstall rpcbind Package

    The rpcbind utility maps RPC services to the ports on which they listen. RPC processes notify rpcbind when they start, registering the ports they a...
    Rule Low Severity
  • Network Time Protocol

    The Network Time Protocol is used to manage the system clock over a network. Computer clocks are not very accurate, so time will drift unpredictabl...
    Group
  • Install the systemd_timesyncd Service

    The systemd_timesyncd service should be installed.
    Rule High Severity
  • The Chronyd service is enabled

    chrony is a daemon which implements the Network Time Protocol (NTP) is designed to synchronize system clocks across a variety of systems and use a ...
    Rule Medium Severity
  • Enable the NTP Daemon

    The ntp service can be enabled with the following command:
    $ sudo systemctl enable ntp.service
    Rule High Severity
  • Enable systemd_timesyncd Service

    The systemd_timesyncd service can be enabled with the following command:
    $ sudo systemctl enable systemd_timesyncd.service
    Rule High Severity
  • Ensure that chronyd is running under chrony user account

    chrony is a daemon which implements the Network Time Protocol (NTP). It is designed to synchronize system clocks across a variety of systems and us...
    Rule Medium Severity
  • Configure server restrictions for ntpd

    ntpd is a daemon which implements the Network Time Protocol (NTP). It is designed to synchronize system clocks across a variety of systems and use ...
    Rule Medium Severity
  • Configure ntpd To Run As ntp User

    ntp is a daemon which implements the Network Time Protocol (NTP). It is designed to synchronize system clocks across a variety of systems and use a...
    Rule Medium Severity
  • Obsolete Services

    This section discusses a number of network-visible services which have historically caused problems for system security, and for which disabling or...
    Group
  • Uninstall rsync Package

    The rsyncd service can be used to synchronize files between systems over network links. The <code>rsync</code> package can be removed with the foll...
    Rule Medium Severity
  • Rlogin, Rsh, and Rexec

    The Berkeley r-commands are legacy services which allow cleartext remote access and have an insecure trust model.
    Group
  • Uninstall rsh Package

    The rsh-client package contains the client commands for the rsh services
    Rule Unknown Severity

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