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DRAFT - Protection Profile for General Purpose Operating Systems

Rules and Groups employed by this XCCDF Profile

  • 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 unpredictably on unmanaged systems. Central time protocols can...
    Group
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  • The Chrony package is installed

    System time should be synchronized between all systems in an environment. This is typically done by establishing an authoritative time server or set of servers and having all systems synchronize th...
    Rule Medium Severity
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  • Disable chrony daemon from acting as server

    The <code>port</code> option in <code>/etc/chrony.conf</code> can be set to <code>0</code> to make chrony daemon to never open any listening port for server operation and to operate strictly in a c...
    Rule Low Severity
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  • Disable network management of chrony daemon

    The cmdport option in /etc/chrony.conf can be set to 0 to stop chrony daemon from listening on the UDP port 323 for management connections made by chronyc.
    Rule Low Severity
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  • SSH Server

    The SSH protocol is recommended for remote login and remote file transfer. SSH provides confidentiality and integrity for data exchanged between two systems, as well as server authentication, throu...
    Group
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  • Install OpenSSH client software

    The openssh-clients package can be installed with the following command: 
    $ sudo yum install openssh-clients
    Rule Medium Severity
    Show

  • Install the OpenSSH Server Package

    The openssh-server package should be installed. The openssh-server package can be installed with the following command: 
    $ sudo yum install openssh-server
    Rule Medium Severity
    Show

  • Configure OpenSSH Client if Necessary

    The following configuration changes apply to the SSH client. They can improve security parameters relwevant to the client user, e.g. increasing entropy while generating initialization vectors. Note...
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  • Configure session renegotiation for SSH client

    The <code>RekeyLimit</code> parameter specifies how often the session key is renegotiated, both in terms of amount of data that may be transmitted and the time elapsed. To decrease the default limi...
    Rule Medium Severity
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  • SSH client uses strong entropy to seed (for CSH like shells)

    To set up SSH client to use entropy from a high-quality source, make sure that the appropriate shell environment variable is configured. The <code>SSH_USE_STRONG_RNG</code> environment variable det...
    Rule Medium Severity
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Node 2

siemur/test-space

The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.

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