Hardening items

Enable SMB signing to verify the integrity of SMB traffic and reduce the risk of man-in-the-middle attacks against Windows file sharing.

Reduce the risk of the PrintNightmare vulnerability by securing the Windows Print Spooler service, applying security updates, and restricting printer driver installation to trusted administrators.

Disable NetBIOS name resolution to reduce legacy attack surfaces, prevent name spoofing attacks, and encourage secure DNS-based name resolution.

Enable NTLM auditing to identify legacy applications and systems still relying on NTLM before enforcing restrictions or a move to Kerberos-only authentication.

Mitigate PrintNightmare-class vulnerabilities by disabling the Print Spooler service on domain controllers, since DCs rarely need direct printing functionality.

Reduce the attack surface by disabling Internet Explorer and enforcing Microsoft Edge with Internet Explorer mode only for legacy applications when absolutely required.