The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2020
Filed:
Feb. 01, 2018
National Chiao Tung University, Hsinchu, TW;
Hsueh Ming Hang, Hsinchu, TW;
Shaw Hwa Hwang, Hsinchu, TW;
Cheng Yu Yeh, Hsinchu, TW;
Bing Chih Yao, Hsinchu, TW;
Kuan Lin Chen, Hsinchu, TW;
Yao Hsing Chung, Hsinchu, TW;
Shun Chieh Chang, Hsinchu, TW;
Chi Jung Huang, Hsinchu, TW;
Li Te Shen, Hsinchu, TW;
Ning Yun Ku, Hsinchu, TW;
Tzu Hung Lin, Hsinchu, TW;
Ming Che Yeh, Hsinchu, TW;
NATIONAL CHIAO TUNG UNIVERSITY, Hsinchu, TW;
Abstract
The present invention provides a method for NAT traversal in VPN so that the VPN can detect the rule of port allocation for NAT outside the VPN to achieve NAT traversal. The communication structure according to the present invention includes a public network, a client network, a destination network, a first NAT, a second NAT. A DNAT-T proxy server is installed between the first NAT and the second NAT and has the function for the VPN to conduct a plurality of (N times) registrations before sending data out to detect the rule for NAT port allocation of the DNAT-T proxy server, and then inform the next NAT port allocation to the other side of the VPN so as to achieve NAT traversal for the data packets in VPN.