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The Microsoft Windows Server 2025 Security Technical Implementation Guide (V1 R4) has 291 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.
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New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.
If OpenSSH is not installed on the system, this requirement is not applicable.
Verify the SSH private host key files permissions with the following command:
C:\ > Get-ChildItem -Path "C:\ProgramData\ssh" -Filter "*_key" -File | ForEach-Object { icacls.exe $_.FullName }
C:\ProgramData\ssh\ssh_host_ecdsa_key BUILTIN\Administrators:(F)
NT AUTHORITY\SYSTEM:(F)
Successfully processed 1 files; Failed processing 0 files
C:\ProgramData\ssh\ssh_host_ed25519_key BUILTIN\Administrators:(F)
NT AUTHORITY\SYSTEM:(F)
Successfully processed 1 files; Failed processing 0 files
C:\ProgramData\ssh\ssh_host_rsa_key BUILTIN\Administrators:(F)
NT AUTHORITY\SYSTEM:(F)
Successfully processed 1 files; Failed processing 0 files
If any private host key file does not have the default permission as in the example output, this is a finding.
Maintain the permissions of the private host key files as follows:
BUILTIN\Administrators:(F)
NT AUTHORITY\SYSTEM:(F)