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D3-DNSAL

DNS Allowlisting

Isolate Tactic

Restrict DNS resolution to approved domains to prevent communication with malicious infrastructure.

View on MITRE D3FEND

Implementation Guidance

  • Deploy DNS filtering solution
  • Block newly registered domains
  • Restrict outbound DNS to corporate resolvers
  • Monitor DNS query patterns
  • Implement response policy zones

Tools & Technologies

Cisco UmbrellaInfobloxPi-holeCloudflare GatewayPalo Alto DNS Security

ATT&CK Techniques Countered

This defensive technique helps protect against the following adversary techniques:

T1071

Application Layer Protocol

Explore Purple Team Matrix for full mappings

Related Techniques in Isolate

D3-NI

Network Isolation

D3-EI

Execution Isolation

D3-HBPI

Host-Based Process Isolation

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