Repeaters for secure local area networks

Details Repeaters for secure local area networks Repeaters for secure local area networks

1995-01-30

1998-10-13

Marcelo, Melvin

Multiplex communications

Diagnostic testing

Of a repeater

370392, 34082534, 380 25, 380 49, H04K 100, H04L 932

Patent

active

058223037

ABSTRACT:
A multiport repeater for a local area network installation has (in addition to its conventional functions) storing access rules for the items of equipment connected to it. It reads a portion of each frame, which may be all or part of the destination address segment and/or of the source address segment and/or of the control segment of each incoming data frame, or it could be a frame or protocol identifier incorporated in opening bytes of the data segment. It compares the data that it reads with the stored access rules to determine whether the frame is permitted or not. If not, it corrupts the frame which it is in the course of re-transmitting, for example by overwriting it with meaningless digits. It may also report the source address, destination address and reason for deciding to corrupt the frame to the network controller.

REFERENCES:
patent: 4449247 (1984-05-01), Waschka, Jr.
patent: 4626845 (1986-12-01), Ley
patent: 4627052 (1986-12-01), Hoare et al.
patent: 4672572 (1987-06-01), Alsberg
patent: 4692918 (1987-09-01), Elliott et al.
patent: 4783657 (1988-11-01), Bouchard et al.
patent: 4887075 (1989-12-01), Hirasawa
patent: 4896319 (1990-01-01), Lidinsky et al.
patent: 4901348 (1990-02-01), Nichols et al.
patent: 4974190 (1990-11-01), Curtis
patent: 5161192 (1992-11-01), Carter et al.
patent: 5177788 (1993-01-01), Schanning et al.
patent: 5311593 (1994-05-01), Carmi
patent: 5453980 (1995-09-01), Van Engelshoven
patent: 5455828 (1995-10-01), Zisapel
patent: 5489896 (1996-02-01), Sofer et al.
European Search Report EP 90 31 2060.
Kwok, et al., On Transparent Bridging of CSMA/CD Networks, 1989 IEEE, pp. 5.7.1 through 5.7.6 (Dallas Globecom '89 IEEE Global Telecommunications Conference & Exhibition, vol. 1 of 3, Nov. 27-30, 1989).
Weinstein, "Bridging to a Better LAN", 8187 Mini-Micro Systems, XXII (1989) Feb., No. 2, Newton, MA, pp. 86-88.
Japanese Abstract 59-63839(A), vol. 8, No. 167 (E-258) Aug. 2, 1984.
Brian P. Schanning, Secure Relays: An Alternative Approach to LANSEC, Apr. 3, 1989, pp. 31-52.
"Physical Signaling, Medium Attachment, and Baseband Medium Specification, Type 1Base5, StarLAN" Specification excerpts of Draft C Unapproved Draft, Oct. 1985, IEEE Computer Society.

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