Connections to non-domain networks when connected to a domain authenticated network must be blocked.

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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-220807r569187_rule		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
Windows 10 Security Technical Implementation Guide	2021-03-10

Details

Check Text ( C-22522r554906_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".