Title

The system must be prevented from joining a homegroup. (Cat II impact)

Discussion

Homegroups are a method of sharing data and printers on a home network. This setting will prevent a system from being joined to a homegroup.

Check Content

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Subkey: \Software\Policies\Microsoft\Windows\Homegroup\ Value Name: DisableHomeGroup Type: REG_DWORD Value: 1

Fix Text

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> HomeGroup -> "Prevent the computer from joining a homegroup" to "Enabled".

Additional Identifiers

Rule ID: SV-48479r2_rule

Vulnerability ID: V-21975

Group Title: Prevent Joining Homegroup

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.