Method and Apparatus for Setting Secure Connection in Wireless Communications System

• US 20140130163A1
• Filed: 09/22/2013
• Published: 05/08/2014
• Est. Priority Date: 11/06/2012
• Status: Active Grant

• Current Assignee: MediaTek, Inc.
• Original Assignee: MediaTek, Inc.
• Inventors: Huang, Shun-Yong, Wang, Chao-Chun, Chen, Shao-Wei, Tsai, Yu-Che
• Granted Patent: US 9,270,692 B2
• Time in Patent Office: Days
• US Class Current: 726/23
• CPC Class Codes: H04L 63/0236 Filtering by address, protocol, port number or service, e.g. IP-address or URL
• CPC Class Codes: H04L 63/1416 Event detection, e.g. attack signature detection
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04W 12/12 Detection or prevention of fraud
• CPC Class Codes: H04W 12/128 Anti-malware arrangements, e.g. protection against SMS fraud or mobile malware

Abstract

A method of setting a secure connection in a wireless communications system is disclosed. The method comprises setting a protocol information to a terminal; and checking a packet received in the terminal according to the protocol information; wherein the packet comprises a protocol type, a source port, and a destination port.

Claims

1. A method of setting a secure connection in a wireless communications system, the method comprising:

setting a protocol information to a terminal in the wireless communication system; and

checking a packet received in the terminal according to the protocol information;

wherein the packet comprises a protocol type, a source port, and a destination port.

2. The method of claim 1, wherein the terminal is a source device.

3. The method of claim 2, further comprising dropping the packet when the protocol type of the packet is user datagram protocol.

4. The method of claim 1, wherein the terminal is a sink device.

5. The method of claim 4, further comprising checking if the destination port of the packet is a video or an audio port when the protocol type of the packet is user datagram protocol.

6. The method of claim 5, further comprising:

dropping the packet when the destination port of the packet received in the sink is not a video or an audio port; and

forwarding the packet to a host when the destination port of the packet received in the sink is a video or an audio port.

7. The method of claim 1, further comprising forwarding the packet to a host in the wireless system when the protocol type of the packet is neither user datagram protocol nor transmission control protocol.

8. The method of claim 1, further comprising checking the source port and the destination port of the packet according to the protocol information when the protocol type of the packet is transmission control protocol.

9. The method of claim 8, further comprising:

dropping the packet if the source port or the destination port of the packet is not comprised in the protocol information; and

forwarding the packet if the source port and the destination port of the packet are comprised in the protocol information.

10. The method of claim 1, wherein the protocol information comprises a control port and combinations of a user input back channel (UIBC) port, an Inter-Integrated Circuit (I2C) port or a high-bandwidth digital content protection (HDCP) port.

11. A communication apparatus for a wireless communications system, comprising:

a processor;

a storage unit;

a program code, stored in the storage unit, wherein the program code instructs the processor to execute the following steps;

setting a protocol information to a terminal in the wireless system; and

checking a packet received in the terminal according to the protocol information;

wherein the packet comprises a protocol type, a source port, and a destination port.

12. The communication apparatus of claim 11, wherein the terminal is a source device.

13. The communication apparatus of claim 12, wherein the steps further comprise:

dropping the packet when the protocol type of the packet is user datagram protocol.

14. The communication apparatus of claim 11, wherein the terminal is a sink device.

15. The communication apparatus of claim 14, wherein the steps further comprise:

checking if the destination port of the packet is a video or an audio port when the protocol type of the packet is user datagram protocol.

16. The communication apparatus of claim 15, wherein the steps further comprise:

dropping the packet when the destination port of the packet is not a video or an audio port; and

forwarding the packet to a host in the wireless system when the destination port of the packet is a video or an audio port.

17. The communication apparatus of claim 11, wherein the steps further comprise:

forwarding the packet to a host in the wireless system when the protocol type of the packet is neither user datagram protocol nor transmission control protocol.

18. The communication apparatus of claim 11, wherein the steps further comprise:

checking the source port and the destination port of the packet according to the protocol information when the protocol type of the packet is transmission control protocol.

19. The communication apparatus of claim 18, wherein the steps further comprise:

dropping the packet if the source port or the destination port of the packet is not comprised in the protocol information; and

forwarding the packet if the source port and the destination port of the packet are comprised in the protocol information.

20. The communication apparatus of claim 11, wherein the protocol information comprises a control port and combinations of a user input back channel (UIBC) port, an inter-integrated circuit (I2C) port and a high-bandwidth digital content protection (HDCP) port.