Ultra-small, ultra-low power single-chip firewall security device with tightly-coupled software and hardware
First Claim
1. A firewall security device, comprising:
- a processor; and
an operating system (OS) embedded in the processor,the OS comprisinga protocol stack for communicating with one or more devices via a network interface,wherein the protocol stack is configured to receive and transmit data packets, and block unauthorized data packets within one or more layers of the protocol stack based on predetermined firewall policies;
wherein the OS utilizes sockets style Application Programming Interface (API) of sockets and ports on IP addresses for implementing the predetermined firewall policies, wherein all operations for the OS are executed using the sockets style API.
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Abstract
A firewall security device, system and corresponding method are provided that includes an operating system of an entirely new architecture. The operating system is based fundamentally around a protocol stack (e.g., TCP/IP stack), rather than including a transport/network layer in a conventional core operating system. The firewall security device may include a processor and an operating system (OS) embedded in the processor. The OS may include a kernel. The operating system kernel is a state machine and may include a protocol stack for communicating with one or more devices via a network interface. The OS may be configured to receive and transmit data packets and block unauthorized data packets within one or more layers of the protocol stack based on predetermined firewall policies.
93 Citations
20 Claims
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1. A firewall security device, comprising:
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a processor; and an operating system (OS) embedded in the processor, the OS comprising a protocol stack for communicating with one or more devices via a network interface, wherein the protocol stack is configured to receive and transmit data packets, and block unauthorized data packets within one or more layers of the protocol stack based on predetermined firewall policies; wherein the OS utilizes sockets style Application Programming Interface (API) of sockets and ports on IP addresses for implementing the predetermined firewall policies, wherein all operations for the OS are executed using the sockets style API. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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receiving a data packet, within an operating system (OS), the OS being a state machine that comprises a protocol stack for processing the data packet according to a network protocol, the OS being embedded and executing within a processor; and processing the received data packet within one or more layers of the protocol stack to determine whether the data packet is authorized based on predetermined firewall policies, wherein unauthorized data packets are blocked while authorized data packets are transmitted; and wherein the OS utilizes sockets style Application Programming Interface (API) of sockets and ports on IP addresses for implementing the predetermined firewall policies, wherein all operations for the OS are executed using the sockets style API. - View Dependent Claims (12, 13, 14, 15)
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16. A non-transitory computer-readable storage medium having embodied instructions thereon, the instructions executable by a processor to:
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receive a data packet, within an operating system (OS), the OS is based entirely on a protocol stack and comprising a dedicated OS kernel, the dedicated OS kernel consisting of a state machine that comprises the protocol stack for processing the data packet according to a network protocol, the OS being embedded and executing within a processor; and process the received data packet within one or more layers of the protocol stack to determine whether the data packet is authorized based on predetermined firewall policies, wherein unauthorized data packets are blocked while authorized data packets are transmitted; and wherein the OS utilizes sockets style Application Programming Interface (API) of sockets and ports on IP addresses for implementing the predetermined firewall policies, wherein all operations for the OS are executed using the sockets style API.
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17. A system for routing data packets across communication networks, comprising:
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a plurality of communication ports; a switch, the switch being configured to transmit multiple data packets between the plurality of communication ports; and at least one firewall security device, the firewall security device comprising an operating system (OS) embedded in a processor, the OS having a protocol stack that communicates with one or more devices via a network interface, wherein the protocol stack is configured to receive and transmit data packets and block unauthorized data packets within one or more layers of the protocol stack based on predetermined firewall policies; and wherein the OS utilizes sockets style Application Programming Interface (API) of sockets and ports on IP addresses for implementing the predetermined firewall policies, wherein all operations for the OS are executed using the sockets style API. - View Dependent Claims (18, 19, 20)
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Specification