windows firewall - Server 2019 - restrict port 3389 - Server Fault
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RDP Not Working | Not listening the port 3389 in windows server 2016 - Microsoft Community Hub
What is Port 3389?
Connecting using putty with Windows Remote Desktop Windows Based Remote Connections | DSLReports, ISP Information
John Hammond on X: "On at least one host, we've observed the threat actor staging persistence by opening port 3389 for RDP: netsh advfirewall firewall add rule name="Open Port 3389" dir=in action=allow
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