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Scr 72 36 Extranets: Automotive Network Exchange 1405 1082_06F9_c3 73 © 1999, Cisco Systems, Inc. Extranets: Shared Peer #1 Corporate Intranet Corporate Third Party Owned Peer #2 Co-petitor Intranet Peer #3 1405 1082_06F9_c3 © 1999, Cisco Systems, Inc. Copyright © 1998, Cisco Systems, Inc. All rights reserved. Printed in USA. scr 74 37 Shared—Physical Connection Shared Network Provider Partner #1 Corporate Intranet • Connection usually specified by Shared Network Provider 1405 1082_06F9_c3 © 1999, Cisco Systems, Inc.

All rights reserved. Printed in USA. scr 84 42 Case Study—Printing Service DMZ Firewall Printing Printing Company Company Internet • Start with email attachments, but too large and awkward • Add secure “drop off” system for customers to leave print jobs 1405 1082_06F9_c3 85 © 1999, Cisco Systems, Inc. Case Study—Printing Service DMZ Firewall Printing Printing Company Company Internet Firewall Graphics Graphics Company Company 1405 1082_06F9_c3 DMZ • Create extranet by adding bilateral connection to graphics partner © 1999, Cisco Systems, Inc.

All rights reserved. Printed in USA. scr 86 43 Case Study—Printing Service DMZ Firewall Printing Printing Company Company Internet Firewall DMZ Graphics Graphics Company Company • Back up connection by building encrypted tunnel through the Internet 1405 1082_06F9_c3 87 © 1999, Cisco Systems, Inc. Case Study—Printing Service DMZ Firewall Printing Printing Company Company Internet Firewall DMZ Graphics Graphics Company Company Publishing Publishing Company Company 1405 1082_06F9_c3 © 1999, Cisco Systems, Inc.

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