From Remote Endpoint STIG
Part of SRC-EPT-192 NIC and modem are mutually exclusive
Associated with IA controls: ECSC-1
Disabling of the NIC while the modem is enabled reduces the risk associated with being on a LAN with a dial up connection.
This check verifies the remote access device is configured to prevent simultaneous use of the NIC and modem for communications. Verify that the remote device is configured to use at least two hardware profiles. One profile enables the modem and disables the NIC, while the second profile disables the modem but enables the NIC. Navigate to the Control Panel folder and select the “System” applet. Select the “Hardware” tab for the System Properties menu. Click “Cancel” to return to the “System Properties” dialog box. Click the “Device Manager” button. Expand and view the properties for the modem and the Network Adapter (controller). Review the selection in the “Device Usage” area. Reboot and select another hardware profile upon restart. Repeat the above steps to view the modem and NIC in the other profile. If profiles are not in use on the remote device, this is a finding. If “Use this device (enable)” is selected for both the modem and the NIC in a single hardware profile, this is a finding.
Create a hardware profile that disables the modem when the network card is active.
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