TAILIEUCHUNG - Designing Network Security Cisco press

Many TCP/IP implementations follow a predictable pattern for picking sequence numbers. When a host is bootstrapped, the initial sequence number is 1. The initial sequence number is incremented by 128,000 every second, which causes the 32-bit initial sequence number counter to wrap every hours if no connections occur. Each time a connection is initiated, however, the counter is incremented by 64,000. If sequence numbers were chosen at random when a connection arrived, no guarantees could be made that the sequence numbers would be different from a previous incarnation. If an attacker wants to determine the sequencing pattern, all she has to. | Designing Network Security Designing Network Security Port Numbers Security Technologies Export Controls on Cryptography A Threats in an Enterprise Network Considerations for a Site Security Policy Design and Implementation of the Corporate Security Policy J Incident Handling Securing the Corporate Network Infrastructure Securing Internet Access Securing Dial-In Access A Sources of Technical Information Reporting and Prevention Guidelines Industrial Espionage and Network Intrusions Basic Cryptography HOME CONTENTS PREVrOOS NEXT G LOSS ARV FEEDBACK SEARCH HELP Copyright 1989-2000 Cisco Systems Inc. http cpress cc td cpress internl dns 02 02 2001 Cisco Press Internal Home Page March 1999 Welcome to Cisco Press Welcome to the employee only Cisco Press web site. The above Welcome page link presents a FAQ sheet for Cisco Press including information about how you can buy Cisco Press books . New information on the Cisco Press Marketing Incentive Plan is also now available. As source material becomes available from the publisher the complete text of each Cisco Press publication will be presented here for use by Cisco employees. Sample chapters are presented at the public site hosted by Cisco. Design and Implementation Publications focusing on network design and implementation strategies. Internet Routing Architectures ISBN 1-56205-652-2 By Bassam Halabi Explores the ins and outs of interdomain routing network designs. Designing Campus Networks ISBN 1-57870-030-2 By Terri Quinn-Andry and Kitty Haller Focuses on designing scalable networks supporting campus LAN traffic. OSPF Network Design Solutions ISBN 1-57870-046-9 By Thomas M. Thomas II Presents detailed applied coverage of Open Shortest Path First protocol. Internetworking SNA with Cisco Routers ISBN 1-57870-083-3 By George Sackett and Nancy Sackett Provides comprehesive coverage of terms architectures protocols and implementations for internetworking SNA. Content not available. .

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