1. A method for filtering content objects on a per user basis at a gateway node in a content centric networking (CCN) network, where the gateway node has a network interface with a network of a user device originating a CCN interest packet, the method comprising the steps of: receiving a CCN interest packet including a CCN name and a user identity; retrieving a content object identified by the CCN name; retrieving allowed categories of the user; retrieving categories of the content object; checking whether allowed categories of the user enable retrieval of the content object based on comparison with the categories of the content object; and forwarding the content object to user in response to the allowed categories enabling retrieval of the content object for the user.