Connections to non-domain networks when connected to a domain authenticated network must be blocked.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-220807 | WN10-CC-000060 | SV-220807r991589_rule | CCI-000366 | medium |
| Description | ||||
| Multiple network connections can provide additional attack vectors to a system and should be limited. When connected to a domain, communication must go through the domain connection. | ||||
| STIG | Date | |||
| Microsoft Windows 10 Security Technical Implementation Guide | 2025-02-25 | |||
Details
Check Text (C-220807r991589_chk)
If the following registry value does not exist or is not configured as specified, this is a finding:
Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WcmSvc\GroupPolicy\
Value Name: fBlockNonDomain
Value Type: REG_DWORD
Value: 1
Fix Text (F-22511r554907_fix)
Configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Windows Connection Manager >> "Prohibit connection to non-domain networks when connected to domain authenticated network" to "Enabled".