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Acrolinx fixes
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support/windows-server/system-management-components/troubleshoot-openssh-windows-firewall-port22.md

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This article discusses how to troubleshoot issues that affect OpenSSH commands that pass through Windows Firewall.
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By default, OpenSSH uses TCP port 22. If this port is blocked or not listening, SSH commands fail. By default, OpenSSH listens on both IPv4 (0.0.0.0:22) and IPv6 ([::]:22). Windows Firewall settings, service status, and network permissions all play a crucial role in ensuring that port 22 is both listening and accessible. A number of factors can block OpenSSH communication, such as the following issues:
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By default, OpenSSH uses TCP port 22. If this port is blocked or not listening, SSH commands fail. By default, OpenSSH listens on both IPv4 (0.0.0.0:22) and IPv6 ([::]:22). Windows Firewall settings, service status, and network permissions all play a crucial role in ensuring that port 22 is both listening and accessible. Many factors can block OpenSSH communication, such as the following issues:
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- The OpenSSH service isn't running or is misconfigured.
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- Port 22 isn't listening because of service or firewall problems.
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> - Avoid using port 22 for non-OpenSSH traffic.
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> - Audit your firewall rules regularly.
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1. To check for existing firewall rules, on you OpenSSH client computer, run the following cmdlet at a PowerShell command prompt.
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1. To check for existing firewall rules, on your OpenSSH client computer, run the following cmdlet at a PowerShell command prompt.
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```powershell
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Get-NetFirewallRule -DisplayName "*SSH*" | Get-NetFirewallPortFilter | Where-Object {$_.LocalPort -eq 22}

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