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Bidda Sovereign Intelligence · 10,065 Verified Nodes · 39 Sovereign Pillars

MITRE ATT&CK T1205.001: Port Knocking (Enterprise Tactic TA0005 - Defense Evasion / TA0003 - Persistence / TA0011 - Command and Control)

MITRE ATT&CK T1205.001 (Port Knocking) is an Enterprise Defense Evasion and Persistence and Command and Control sub-technique of T1205 (Traffic…

Compliance Node Overview

MITRE ATT&CK T1205.001 (Port Knocking) is an Enterprise Defense Evasion and Persistence and Command and Control sub-technique of T1205 (Traffic Signaling). Adversaries may use port knocking to hide open ports used for persistence or command and control. To enable a port, an adversary sends a series of attempted connections to a predefined sequence of closed ports. After the sequence is completed, opening a port is often accomplished by the host based firewall, but could also be implemented by custom software. Affected platforms: Linux, macOS, Windows, Network. MITRE-documented mitigations include M1037 Filter Network Traffic. The Center for Threat-Informed Defense maps this technique to NIST SP 800-53 Rev 5 controls AC-03, AC-04, CA-07, CM-02, CM-06, CM-07, SC-07, SI-04.

Pillar: Cybersecurity · Authority: MITRE Corporation · Version: 1.0.0 · Last updated: 2026-05-25

Primary source: https://attack.mitre.org/techniques/T1205/001/

SHA-256 integrity: 8e51f5c5428ab21b3f771d0c3d08d7c465e7b708fd8bf6db7570f30997870c1d

Primary Citations — 7 traced to source

MITRE ATT&CK Technique T1205.001: Port Knocking (https://attack.mitre.org/techniques/T1205/001/)
MITRE ATT&CK Tactic TA0005: Defense Evasion (https://attack.mitre.org/tactics/TA0005/)

+ 5 more citations (full bibliography, deterministic workflow, actionable schema and crosswalks) included in the vault unlock — $0.01 via Skyfire / L402 / Direct Base USDC.

Access

Discovery (free): /api/v1/nodes/mitre-attack-t1205-001-port-knocking.json — 6-field metadata
Vault (full node): /api/v1/vault/nodes/mitre-attack-t1205-001-port-knocking.json — full 13-key payload, $0.01 USDC (L402/Skyfire/Direct Base)
Canonical URL: https://bidda.com/intelligence/mitre-attack-t1205-001-port-knocking
Back to registry: Browse all 10,065 compliance nodes

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Bidda compliance nodes are reference intelligence, not legal advice. Every node must be reviewed by a qualified compliance professional or legal counsel before implementation in any enterprise workflow, regulated system, or compliance programme. See bidda.com/disclaimer for full terms.