Simultaneous connections to the internet or a Windows domain must be limited.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-253364	WN11-CC-000055	SV-253364r916433_rule		Medium

Description
Multiple network connections can provide additional attack vectors to a system and must be limited. The "Minimize the number of simultaneous connections to the Internet or a Windows Domain" setting prevents systems from automatically establishing multiple connections. When both wired and wireless connections are available, for example, the less preferred connection (typically wireless) will be disconnected.

Description

Multiple network connections can provide additional attack vectors to a system and must be limited. The "Minimize the number of simultaneous connections to the Internet or a Windows Domain" setting prevents systems from automatically establishing multiple connections. When both wired and wireless connections are available, for example, the less preferred connection (typically wireless) will be disconnected.

STIG	Date
Microsoft Windows 11 Security Technical Implementation Guide	2024-02-27

Details

Check Text ( C-56817r890453_chk )
The default behavior for "Minimize the number of simultaneous connections to the Internet or a Windows Domain" is "Enabled". If it exists and is configured with a value of "0", this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WcmSvc\GroupPolicy\ Value Name: fMinimizeConnections Value Type: REG_DWORD Value: 3 (or if the Value Name does not exist)

Check Text ( C-56817r890453_chk )

The default behavior for "Minimize the number of simultaneous connections to the Internet or a Windows Domain" is "Enabled".

If it exists and is configured with a value of "0", this is a finding.

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WcmSvc\GroupPolicy\

Value Name: fMinimizeConnections

Value Type: REG_DWORD
Value: 3 (or if the Value Name does not exist)

Fix Text (F-56767r890454_fix)
The default behavior for "Minimize the number of simultaneous connections to the Internet or a Windows Domain" is "Enabled". If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Windows Connection Manager >> "Minimize the number of simultaneous connections to the Internet or a Windows Domain" to "Enabled". Under "Options", set "Minimize Policy Options" to "3 = Prevent Wi-Fi When on Ethernet".

Fix Text (F-56767r890454_fix)

The default behavior for "Minimize the number of simultaneous connections to the Internet or a Windows Domain" is "Enabled".

If this needs to be corrected, configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Windows Connection Manager >> "Minimize the number of simultaneous connections to the Internet or a Windows Domain" to "Enabled". Under "Options", set "Minimize Policy Options" to "3 = Prevent Wi-Fi When on Ethernet".