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NTLM must be prevented from falling back to a Null session.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-63765 | WN10-SO-000180 | SV-78255r1_rule | Medium |
| Description |
|---|
| NTLM sessions that are allowed to fall back to Null (unauthenticated) sessions may gain unauthorized access. |
| STIG | Date |
|---|---|
| Windows 10 Security Technical Implementation Guide | 2016-06-08 |
Details
| Check Text ( None ) |
|---|
| None |
| Fix Text (F-69693r1_fix) |
|---|
| Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Allow LocalSystem NULL session fallback" to "Disabled". |