A method and system is provided for setting network policies based on electronic devices connected to a network. The electronic devices present on the network are detected and their behavior is captured using profiles. These profiles are then used to generate network policies based on the electronic devices connected to the network. Instead of reacting to behavior of the electronic devices (e.g., anomaly detection to detect malware), the method and system sets the network policies to prevent unauthorized communications (e.g., before malware is present in the system).