A network resources discovery system regulates the automated discovery of available network resources using a network-enabled device to ensure that the network-enabled device only discovers the specific network resources which it is authorized to access. In use, a network resources discovery proxy includes a local controller which intermediates network resources discovery request and response packets transmitted between the network-enabled device and available network resources. By comparing the network resources discovery packets against a local, modifiable set of matching rules, the network resources discovery proxy is able to filter out the automated discovery of any types of services and devices provided by a computer network which the network-enabled device is not permitted to receive. By restricting the automated discovery of network resources in accordance with the local set of matching rules, the network resources discovery system provides an enhanced level of network security through the selective isolation of network devices.