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:
Jul. 16, 1996
Filed:
May. 18, 1994
Chao-Yu Liang, San Jose, CA (US);
Bay Networks, Inc., Santa Clara, CA (US);
Abstract
A method and apparatus for preventing intrusive access to a network. The method and apparatus are implemented in a network having a star topology. Utilizing a network management module of a network concentrator as a centralized functional base, unauthorized Data Terminal Elements (DTEs) may be prevented from transmitting messages on a network. By providing a centrally located means by which a set of unique DTE addresses can be associated with a particular port on the network concentrator, valid DTE addresses can be associated with a message packet that contains the address of the transmitting DTE. If the DTE address matches those associated with the port from which it was received, the message packet is authorized. If the DTE address does not match those addresses associated with from which it was received, the message packet is unauthorized. When an unauthorized message packet is received, the port from which the frame was received, is partitioned. The centralized approach utilizing a network manager as a functional base has certain advantages in comparison to distributed security implementations. Such advantages include lower cost and the ease of using existing network management functionality.