II - Mission Support Sensitive

SRG-NET-000015-NAC-000020

Forescout must enforce approved access by employing admissions assessment filters that include, at a minimum, device attributes such as type, IP address, resource group, and/or mission conditions as defined in Forescout System Security Plan (SSP). This is required for compliance with C2C Step 4.

SRG-NET-000015-NAC-000030

Endpoint policy assessment must proceed after the endpoint attempting access has been identified using an approved identification method such as IP address. This is required for compliance with C2C Step 2.

SRG-NET-000015-NAC-000040

For endpoints that require automated remediation, Forescout must be configured to logically separate endpoints from the trusted network traffic during remediation. This is required for compliance with C2C Step 4.

SRG-NET-000015-NAC-000060

If a device requesting access fails Forescout policy assessment, Forescout must communicate with other components and the switch to either terminate the session or isolate the device from the trusted network for remediation. This is required for compliance with C2C Step 3.

SRG-NET-000015-NAC-000070

Forescout must be configured to notify the user before proceeding with remediation of the user's endpoint device when automated remediation is used. This is required for compliance with C2C Step 3.

SRG-NET-000015-NAC-000080

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.

SRG-NET-000015-NAC-000090

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.

SRG-NET-000015-NAC-000100

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.

SRG-NET-000015-NAC-000110

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.

SRG-NET-000015-NAC-000120

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.

SRG-NET-000015-NAC-000130

Forescout must be configured so client machines do not communicate with other network devices in the DMZ or subnet except as needed to perform a client assessment or to identify itself. This is required for compliance with C2C Step 2.

SRG-NET-000321-NAC-001210

Forescout must enforce the revocation of endpoint access authorizations when devices are removed from an authorization group. This is required for compliance with C2C Step 4.

SRG-NET-000322-NAC-001220

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.

SRG-NET-000322-NAC-001230

Forescout must deny or restrict access for endpoints that fail critical endpoint security checks. This is required for compliance with C2C Step 4.

SRG-NET-000334-NAC-001350

Forescout must off-load log records onto a different system. This is required for compliance with C2C Step 1.

SRG-NET-000335-NAC-001360

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.

SRG-NET-000343-NAC-001460

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

SRG-NET-000343-NAC-001470

Forescout must be configured to apply dynamic ACLs that restrict the use of ports when non-entity endpoints are connected using MAC Authentication Bypass (MAB). This is required for compliance with C2C Step 4.

SRG-NET-000273-NAC-000970

Forescout must reveal error messages only to the Information System Security Officer (ISSO), Information System Security Manager (ISSM), and System Administrator (SA). This is required for compliance with C2C Step 1.

SRG-NET-000088-NAC-000440

Forescout must configure TCP for the syslog protocol to allow for detection by the central event server if communications is lost. This is required for compliance with C2C Step 1.

SRG-NET-000343-NAC-001480

Forescout switch module must only allow a maximum of one registered MAC address per access port. This is required for compliance with C2C Step 4.

SRG-NET-000517-NAC-002370

For TLS connections, Forescout must automatically terminate the session when a client certificate is requested and the client does not have a suitable certificate. This is required for compliance with C2C Step 1.

SRG-NET-000062-NAC-000340

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.

SRG-NET-000320-NAC-001200

Communications between Forescout endpoint agent and the switch must transmit access authorization information via a protected path using a cryptographic mechanism. This is required for compliance with C2C Step 1.

SRG-NET-000492-NAC-002110

Forescout must generate a log record when the client machine fails policy assessment because required security software is missing or has been deleted. This is required for compliance with C2C Step 1.