Early warning system alert description

Alert ID: HONK.11.1267
Affected item: Port 139
Operating system: Windows 7
OS Manufacturer: Microsoft
Text: Port 139 (NETBIOS) is opened. It can be dangerous (except you know what are you doing). Opened by process: System.

General information

Triggered when there is an issue with open port.


Disable SMB protocol (Windows 10 only)
  • Open Windows command line by typing cmd and pressing Enter

  • Open Optional Features setup window by typing optionalfeatures

  • Uncheck item 'SMB 1.0/CIFS File Sharing Support'

  • Press OK button

  • Restart Windows

  • Closes ports 139 and 445

  • Disables printer and file sharing over local network.

List of alerts

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