Secure data transmission in extended Ethernet environments

Author

Recacha, F. ; Melús, J.L. ; Simón, X. ; Soriano, M. ; Forné, J.

Author_Institution

Dept. of Appl. Math. & Telematics, Polytech. Univ. of Catalonia, Barcelona, Spain

Volume

11

Issue

5

fYear

1993

fDate

6/1/1993 12:00:00 AM

Firstpage

794

Lastpage

803

Abstract

An extended Ethernet LAN is built by connecting several Ethernet segments by means of suitable devices (repeaters, bridges, etc.). A common way to make this interconnection is through a main segment, called the backbone, that joins each of the departments (or, perhaps, building floors) within the owner premises. In this kind of network, data transmission in the backbone is very sensitive to either eavesdropping or manipulation. The implementation of a cryptographic system that protects transmission (providing for both confidentiality and integrity of transmitted data) in this kind of network is addressed. The operation of the proposed system and the specific troubles encountered in implementing it in the local network of the Polytechnic University of Catalonia are presented. An analysis of the functionality of the ciphering bridges is provided and their implementation is studied in detail. Finally, the more relevant results and conclusions are given

Keywords

cryptography; data communication systems; local area networks; Polytechnic University of Catalonia; backbone; bridges; cryptographic system; extended Ethernet LAN; repeaters; Bridges; Cryptography; Data communication; Ethernet networks; Floors; Joining processes; LAN interconnection; Local area networks; Repeaters; Spine;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/49.223882

Filename

223882