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Rules and Groups employed by this XCCDF Profile

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must not allow interfaces to accept Internet Protocol version 6 (IPv6) Internet Control Message Protocol (ICMP) redirect messages by default.

    &lt;VulnDiscussion&gt;ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. Thes...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must not be performing Internet Protocol version 6 (IPv6) packet forwarding unless the system is a router.

    &lt;VulnDiscussion&gt;Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this s...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must not be performing Internet Protocol version 6 (IPv6) packet forwarding by default unless the system is a router.

    &lt;VulnDiscussion&gt;Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this s...
    Rule Medium Severity
  • SRG-OS-000423-GPOS-00187

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must have SSH installed to protect the confidentiality and integrity of transmitted information.

    &lt;VulnDiscussion&gt;Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected commu...
    Rule High Severity
  • SRG-OS-000423-GPOS-00187

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must use SSH to protect the confidentiality and integrity of transmitted information.

    &lt;VulnDiscussion&gt;Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected commu...
    Rule High Severity
  • SRG-OS-000023-GPOS-00006

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must display the Standard Mandatory DOD Notice and Consent Banner before granting access via SSH.

    &lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to SLEM 5 ensures privacy and security notific...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00229

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must not allow unattended or automatic logon via SSH.

    &lt;VulnDiscussion&gt;Failure to restrict system access via SSH to authenticated users negatively impacts SLEM 5 security.&lt;/VulnDiscussion&gt;&l...
    Rule High Severity
  • SRG-OS-000163-GPOS-00072

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must be configured so that all network connections associated with SSH traffic terminate after becoming unresponsive.

    &lt;VulnDiscussion&gt;Terminating an unresponsive SSH session within a short time period reduces the window of opportunity for unauthorized personn...
    Rule Medium Severity
  • SRG-OS-000126-GPOS-00066

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 must be configured so that all network connections associated with SSH traffic are terminated after 10 minutes of becoming unresponsive.

    &lt;VulnDiscussion&gt;Terminating an unresponsive SSH session within a short time period reduces the window of opportunity for unauthorized personn...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • SLEM 5 SSH daemon must disable forwarded remote X connections for interactive users, unless to fulfill documented and validated mission requirements.

    &lt;VulnDiscussion&gt;The security risk of using X11 forwarding is that the client's X11 display server may be exposed to attack when the SSH clien...
    Rule Medium Severity

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