SC.3.192 Implement Domain Name System (DNS) filtering services.

CMMC Practice SC.3.192: Implement Domain Name System (DNS) filtering services.

Links to Publicly Available Resources

CMMC CLARIFICATION (Ref CMMC – Appendix B)

Domain Name System (DNS) filtering blocks access to certain websites or IP addresses. The organization should use DNS to prevent access to known malicious websites or categories of websites. The DNS filtering will prevent users from receiving an IP address for the blocked domain names. A commercial DNS filtering service can be used.