Secure the Operating System Layer

Last modified: August 01, 2022

We recommend these best practices for hardening your operating system. 

  • Check and install Windows updates. 
  • Apply the latest patches and updates. 
  • Remove or disable unnecessary services and software.  
  • Assign minimal permissions to system users.  
  • Enable auditing. 
  • Follow any additional OS-level hardening steps recommended by the security/IT teams at your organization.
  • Adjust the Windows Schannel configuration to limit access to insecure protocols and cipher suites, and to set preferred cipher suite order. 
    • You can modify the Schannel configuration manually via the registry and group policy editor (see Secure Channel - Win32 apps).  

    • Or you can use the third-party tool IIS Crypto (For example, Nartac Software - IIS Crypto. If you decide to use IIS Crypto, their built-in ‘Best Practices’ template is a great starting point.). 

Contact your operating system vendor for additional recommended best practices for hardening your operating system.

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