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Guide to the Secure Configuration of Red Hat Virtualization 4

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Enable Encrypted X11 Forwarding

    By default, remote X11 connections are not encrypted when initiated by users. SSH has the capability to encrypt remote X11 connections when SSH's <...
    Rule High Severity
    Show

  • Formatting Conventions

    Commands intended for shell execution, as well as configuration file text, are featured in a <code>monospace font</code>. <i>Italics</i> are used t...
    Group
    Show

  • Configure SSSD to Expire SSH Known Hosts

    SSSD should be configured to expire keys from known SSH hosts after <code><xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_sssd_ssh_kno...
    Rule Medium Severity
    Show

  • Limit Users' SSH Access

    By default, the SSH configuration allows any user with an account to access the system. There are several options available to limit which users an...
    Rule Unknown Severity
    Show

  • Enable SSH Print Last Log

    Ensure that SSH will display the date and time of the last successful account logon. <br> The default SSH configuration enables print of the date a...
    Rule Medium Severity
    Show

  • Force frequent session key renegotiation

    The <code>RekeyLimit</code> parameter specifies how often the session key of the is renegotiated, both in terms of amount of data that may be trans...
    Rule Medium Severity
    Show

  • Ensure SSH LoginGraceTime is configured

    The <code>LoginGraceTime</code> parameter to the SSH server specifies the time allowed for successful authentication to the SSH server. The longer ...
    Rule Medium Severity
    Show

  • Set LogLevel to INFO

    The INFO parameter specifices that record login and logout activity will be logged. <br> The default SSH configuration sets the log level to INFO. ...
    Rule Low Severity
    Show

  • Set SSH Daemon LogLevel to VERBOSE

    The <code>VERBOSE</code> parameter configures the SSH daemon to record login and logout activity. To specify the log level in SSH, add or correct t...
    Rule Medium Severity
    Show

  • Set SSH authentication attempt limit

    The <code>MaxAuthTries</code> parameter specifies the maximum number of authentication attempts permitted per connection. Once the number of failur...
    Rule Medium Severity
    Show

  • Set SSH MaxSessions limit

    The <code>MaxSessions</code> parameter specifies the maximum number of open sessions permitted from a given connection. To set MaxSessions edit <co...
    Rule Medium Severity
    Show

  • Ensure SSH MaxStartups is configured

    The MaxStartups parameter specifies the maximum number of concurrent unauthenticated connections to the SSH daemon. Additional connections will be ...
    Rule Medium Severity
    Show

  • Enable Use of Privilege Separation

    When enabled, SSH will create an unprivileged child process that has the privilege of the authenticated user. To enable privilege separation in SSH...
    Rule Medium Severity
    Show

  • Strengthen Firewall Configuration if Possible

    If the SSH server is expected to only receive connections from the local network, then strengthen the default firewall rule for the SSH service to ...
    Group
    Show

  • System Security Services Daemon

    The System Security Services Daemon (SSSD) is a system daemon that provides access to different identity and authentication providers such as Red H...
    Group
    Show

  • SSSD certificate_verification option

    Value of the certificate_verification option in the SSSD config.
    Value
    Show

  • SSSD memcache_timeout option

    Value of the memcache_timeout option in the [nss] section of SSSD config /etc/sssd/sssd.conf.
    Value
    Show

  • SSSD ssh_known_hosts_timeout option

    Value of the ssh_known_hosts_timeout option in the [ssh] section of SSSD configuration file /etc/sssd/sssd.conf.
    Value
    Show

  • Install sssd-ipa Package

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

  • Configure PAM in SSSD Services

    SSSD should be configured to run SSSD <code>pam</code> services. To configure SSSD to known SSH hosts, add <code>pam</code> to <code>services</code...
    Rule Medium Severity
    Show

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