Knowledge BaseSolutionsHarden Windows VM SMB Port 445 Exposure

Harden Windows VM SMB Port 445 Exposure

SolutionsZCF · CloudVersions5.4.xArticle IDKB-200119Updated2026-09-16

Scenario

  • Product: ZCF
  • Component: ZStack Cloud
  • Version: 5.4.x
  • Operating-system environment: H84r management environment and Windows guest operating system
  • Deployment: Dual management nodes
  • Trigger: Port 445 exposure requires security hardening.

Symptoms

  • The environment must reduce port-445 risk.
  • Do not block the port directly at the platform side; disable the Windows SMB feature instead.

Assessment

  1. Confirm that the target risk originates from the Windows SMB service.
  2. After disabling

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Harden Windows VM SMB Port 445 Exposure | KB-200119 | ZStack Resource Center