Port 5985 (WinRM (HTTP))

Windows Remote Management, used by PowerShell remoting (HTTPS on 5986).

Transport
TCP
Internet exposure
Never expose

Should not be reachable from the internet.

Security notes

  • A favourite lateral movement channel (Evil-WinRM, Enter-PSSession).
  • Restrict to admin hosts.

When it shows up in your logs

WinRM from a non-admin workstation to servers can be lateral movement.