Patent attributes
The disclosed system allows a user to have access to a protected network through the distribution of signed send tokens. In particular, a device associated with the protected network, such as a network interface card, may generate and issue send tokens to various third-parties who seek access to the network. A send token may be a block of data that contains transmission information regarding the operations that are allowed to be performed by the network user. For example, the send token may identify the portions of the network to which the user's data packets are allowed to be sent, as well as the permitted content of the user's data packets.