Forescout must place client machines on a blacklist or terminate network communications on devices when critical security issues are found that put the network at risk. This is required for compliance with C2C Step 4.
An XCCDF Rule
Description
<VulnDiscussion>Devices that are found to have critical security issues place the network at risk if they are allowed to continue communications. Policy actions should be in place to terminate or restrict network communication or place the suspicious machine on a blacklist.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-233318r811385_rule
- Severity
- High
- References
- Updated
Remediation - Manual Procedure
Use the Forescout Administrator UI to configure compliance policies to ensure any device with critical security issues is added to a blacklist, had its network communication blocked, or isolated from trusted network traffic for remediation.
1. From the Policy tab, identify a Compliance policy.
2. Within the Compliance policy, under Sub-Rule for a device with critical security issues, ensure that an action that Adds Device to Blacklist and/or Disables Device is enabled.
If Forescout does not place client machines on a blacklist or terminate network communications on devices when critical security issues are found that put the network at risk, this is a finding.