An end-user device acting as intermediate networking device, comprising: a wireless wide-area network modem configured to assist the end-user device in communicating with a network system over a wireless access network a wireless local-area-network modem (946, 948) configured to assist the end-user device in communicating with one or more other end-user devices over a wireless local-are network; memory (910, 920, 950); a user interface (1697, 980); and one or more processors (930, 938), characterized in that the network system comprises a network element; the memory is configured to store one or more service policy settings for assisting service usage control of the end-user device acting as an intermediate networking device connecting to the network system to provide services to the one or more other end-user devices that are communicatively connected to the end-user device acting as an intermediate networking device and to prevent unauthorized access to or modifications of the one or more service policy settings, the one or more service policy settings including a particular service policy setting, the particular service policy setting controlling whether a intermediate networking device forwarding service is enabled, the intermediate networking device forwarding service for forwarding traffic between at least one of the one or more other end-user devices and the network system; and the one or more processors are configured to: assist in providing the intermediate networking device forwarding service according to a intermediate networking device forwarding policy, the intermediate networking device forwarding policy associated with the particular service policy setting, assist in obtaining, through the user interface, a modification request associated with enabling or disabling the intermediate networking device forwarding service, and modify the particular service policy setting in accordance with the modification request. a wireless wide-area network modem configured to assist the end-user device in communicating with a network system over a wireless access network a wireless local-area-network modem (946, 948) configured to assist the end-user device in communicating with one or more other end-user devices over a wireless local-are network; memory (910, 920, 950); a user interface (1697, 980); and one or more processors (930, 938), the network system comprises a network element; the memory is configured to store one or more service policy settings for assisting service usage control of the end-user device acting as an intermediate networking device connecting to the network system to provide services to the one or more other end-user devices that are communicatively connected to the end-user device acting as an intermediate networking device and to prevent unauthorized access to or modifications of the one or more service policy settings, the one or more service policy settings including a particular service policy setting, the particular service policy setting controlling whether a intermediate networking device forwarding service is enabled, the intermediate networking device forwarding service for forwarding traffic between at least one of the one or more other end-user devices and the network system; assist in providing the intermediate networking device forwarding service according to a intermediate networking device forwarding policy, the intermediate networking device forwarding policy associated with the particular service policy setting, assist in obtaining, through the user interface, a modification request associated with enabling or disabling the intermediate networking device forwarding service, and modify the particular service policy setting in accordance with the modification request.