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WN11-CC-000044 Internet connection sharing must be disabled.

DISA STIG library V2R11
All changes in this version
first version loaded CAT II

Maps to CM-7 via CCI-000381

Title

Internet connection sharing must be disabled.

Control

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\Network Connections\ Value Name: NC_ShowSharedAccessUI Type: REG_DWORD Value: 0x00000000 (0)

Discussion

Internet connection sharing makes it possible for an existing internet connection, such as through wireless, to be shared and used by other systems essentially creating a mobile hotspot. This exposes the system sharing the connection to others with potentially malicious purpose.

Related controls

CCI-000381

Fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Network >> Network Connections >> "Prohibit use of Internet Connection Sharing on your DNS domain network" to "Enabled".