Most of existing Model-Driven Engineering (MDE) approaches for the Internet of Things (IoT) focus on means of modeling the behavior of end devices. Little attention has been paid to network-related abstractions and communication control. The paper introduces an approach towards enabling model-based communication control in a network of things. First, we suggest a Domain Specific Language (DSL) to abstract basic network features. Second, we propose a policy language to control the communications within the network. Finally, as a proof-of-concept, we present a code generation process to enforce the expressed policy at runtime.