Patent ID: 7552325

Claim:
A peripheral card, comprising: a first interface to a first communications network and a second interface to a second communications network, the first interface comprising a first a wireless communications portion and a processor managing the first wireless communications portion, the first wireless communications portion coupled to an antenna and configured for one-way communication to wirelessly receive data packets from the first communications network at a frequency in the electromagnetic spectrum, the first wireless communications portion lacking a configuration to transmit data to the first communications network, the second interface interfacing with the second communications network; and memory coupled to the processor, the first interface, and the second interface, the memory storing the received data packets; the processor inspecting a header portion and a payload portion of each received data packet and comparing the header portion and the payload portion to a set of rules stored in the memory; and if the header portion and the payload portion satisfy the set of rules, then the processor ignores the received data packet, and if the header portion and the payload portion fail to satisfy the set of rules, then the processor fails the data packet as an intrusion event, wherein the communications portion reduces intrusion of the communications network.