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Forescout Network Access Control Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-NET-000015-NAC-000080

    <GroupDescription></GroupDescription>
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  • Forescout must be configured so that all client machines are assessed by Forescout with exceptions that are allowed to bypass Forescout based on account or account type, as approved by the information system security manager (ISSM) and documented in the System Security Plan (SSP). This is required for compliance with C2C Step 1.

    &lt;VulnDiscussion&gt;The NAC gateway provides the policy enforcement allowing or denying the endpoint to the network. Unauthorized endpoints that ...
    Rule High Severity
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  • SRG-NET-000015-NAC-000090

    <GroupDescription></GroupDescription>
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  • Forescout appliance must not be configured to implement a DHCP layer 3 method for separation or device authorization. This is required for compliance with C2C Step 2.

    &lt;VulnDiscussion&gt;Using DHCP, an internal rogue device can still bypass the authentication process, regardless of the policy flow. Older versio...
    Rule High Severity
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  • SRG-NET-000015-NAC-000100

    <GroupDescription></GroupDescription>
    Group
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  • Forescout must send an alert to the Information System Security Manager (ISSM) and System Administrator (SA), at a minimum, when critical security issues are found that put the network at risk. This is required for compliance with C2C Step 2.

    &lt;VulnDiscussion&gt;Requiring authentication and authorization of both the user's identity and the identity of the computing device is essential ...
    Rule Medium Severity
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  • SRG-NET-000015-NAC-000110

    <GroupDescription></GroupDescription>
    Group
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  • When devices fail the policy assessment, Forescout must create a record with sufficient detail suitable for forwarding to a remediation server for automated remediation or sending to the user for manual remediation. This is required for compliance with C2C Step 3.

    &lt;VulnDiscussion&gt;Notifications sent to the user and/or network administrator informing them of remediation requirements will ensure that actio...
    Rule Medium Severity
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  • SRG-NET-000015-NAC-000120

    <GroupDescription></GroupDescription>
    Group
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  • Forescout must use TLS 1.2, at a minimum, to protect the confidentiality of information passed between the endpoint agent and Forescout for the purposes of client posture assessment. This is required for compliance with C2C Step 1.

    &lt;VulnDiscussion&gt;Using older unauthorized versions or incorrectly configuring protocol negotiation makes the gateway vulnerable to known and u...
    Rule Medium Severity
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  • Forescout must enforce the revocation of endpoint access authorizations at the next compliance assessment interval based on changes to the compliance assessment security policy. This is required for compliance with C2C Step 4.

    &lt;VulnDiscussion&gt;This requirement gives the option to configure for automated remediation and/or manual remediation. A detailed record must be...
    Rule Medium Severity
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  • SRG-NET-000322-NAC-001230

    <GroupDescription></GroupDescription>
    Group
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  • Forescout must deny or restrict access for endpoints that fail critical endpoint security checks. This is required for compliance with C2C Step 4.

    &lt;VulnDiscussion&gt;Devices that do not meet minimum-security configuration requirements pose a risk to the DOD network and information assets. ...
    Rule Medium Severity
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  • SRG-NET-000334-NAC-001350

    <GroupDescription></GroupDescription>
    Group
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  • Forescout must off-load log records onto a different system. This is required for compliance with C2C Step 1.

    &lt;VulnDiscussion&gt;Having a separate, secure location for log records is essential to the preservation of logs as required by policy.&lt;/VulnDi...
    Rule Medium Severity
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  • SRG-NET-000335-NAC-001360

    <GroupDescription></GroupDescription>
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  • Forescout must generate a critical alert to be sent to the Information System Security Officer (ISSO) and Systems Administrator (SA) (at a minimum) in the event of an audit processing failure. This is required for compliance with C2C Step 1.

    &lt;VulnDiscussion&gt;Ensuring that a security solution alerts in the event of misconfiguration or error is imperative to ensuring that proper audi...
    Rule Medium Severity
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  • SRG-NET-000343-NAC-001460

    <GroupDescription></GroupDescription>
    Group
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  • Forescout must authenticate all endpoint devices before establishing a connection and proceeding with posture assessment. This is required for compliance with C2C Step 4.

    &lt;VulnDiscussion&gt;Authenticating all devices as they connect to the network is the baseline of a good security solution. This is especially imp...
    Rule Medium Severity
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  • SRG-NET-000343-NAC-001470

    <GroupDescription></GroupDescription>
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