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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 public host key files permissions with the following command:
C:\ > Get-ChildItem -Path "C:\ProgramData\ssh" -Filter "*key.pub" -File | ForEach-Object { icacls.exe $_.FullName }
C:\ProgramData\ssh\ssh_host_ecdsa_key.pub BUILTIN\Administrators:(F)
NT AUTHORITY\SYSTEM:(F)
Successfully processed 1 files; Failed processing 0 files
C:\ProgramData\ssh\ssh_host_ed25519_key.pub BUILTIN\Administrators:(F)
NT AUTHORITY\SYSTEM:(F)
Successfully processed 1 files; Failed processing 0 files
C:\ProgramData\ssh\ssh_host_rsa_key.pub BUILTIN\Administrators:(F)
NT AUTHORITY\SYSTEM:(F)
Successfully processed 1 files; Failed processing 0 files
If any public host key file does not have the default permission as in the example output, this is a finding.
Maintain the permissions of the public host key files as follows:
BUILTIN\Administrators:(F)
NT AUTHORITY\SYSTEM:(F)