RSA Press

By: Benjamin M. Lail

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Paperback | 24 May 2002

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504 Pages

Dimensions(cm)
22.86 x 18.42 x 3.18

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Design, build, and implement a secure broadband network infrastructure using this authoritative guide. Containing valuable insight from the experts at RSA Security Inc.-- the most trusted name in e-security -- this book will help you learn about common security protocols and prevent against common threats including eavesdropping and denial of service attacks.

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Non-Fiction Computing & I.T.Computer Security Data Encryption Engineering & Technology Electronics & Communications Engineering Communications Engineering & Telecommunications Computer Networking & Communications Network Security Energy Technology & Engineering Electrical Engineering

Foreword	p. xvii
Acknowledgments	p. xix
Preface	p. xxi
Broadband Network Security Fundamentals
An Overview of Broadband Communication	p. 3
A Brief History of Telecommunication	p. 4
That Was Then	p. 6
This Is Now	p. 6
What is Broadband Access?	p. 7
Existing Broadband Access Technologies	p. 7
Cable	p. 8
DSL	p. 9
Fixed Wireless	p. 9
Two-Way Satellite	p. 10
The Future of Broadband	p. 10
Fiber Optics	p. 11
The Importance of Security in Broadband Networks	p. 12
Security and the Average User	p. 12
Securing the Network Infrastructure	p. 15
References	p. 16
Choosing the Right Tools: Security Services and Cryptography	p. 17
Security Services and Mechanisms	p. 17
Confidentiality	p. 18
Integrity	p. 19
Authentication	p. 19
Nonrepudiation	p. 19
Authorization and Access Control	p. 20
Availability	p. 21
The Basics of Cryptography	p. 21
Random Number Generation	p. 23
Symmetric-Key Cryptography	p. 25
Message Digests	p. 36
Public-Key Cryptography	p. 40
Public-Key Cryptography Standards	p. 48
Federal Information Processing Standards and Certification	p. 51
Store-and-Forward vs. Session-Based Encryption	p. 52
Choosing the Appropriate Cryptographic Tools	p. 53
Using Stream Ciphers	p. 53
Using Block Ciphers	p. 54
Using Message Digests	p. 56
Using Public-Key Algorithms	p. 56
Interoperability Notes	p. 57
How Secure Is Too Secure?	p. 57
References	p. 58
The Need for Security: Network Threats and Countermeasures	p. 61
Who, What, and Why? Attackers and Their Motivations	p. 62
When? "The Network Administrator Went Home Hours Ago..."	p. 66
Where? The Internet's a Big Place!	p. 67
Broadband Access vs. Dial-up Access	p. 67
Categorizing Common Attacks	p. 68
Passive Attacks vs. Active Attacks	p. 69
Eavesdropping	p. 69
Impersonation	p. 73
Denial of Service	p. 75
Data Modification	p. 77
Packet Replay	p. 79
Routing Attacks	p. 80
TCP/IP-Specific Attacks	p. 83
Address Spoofing	p. 83
Session Hijacking	p. 86
Countermeasures for Address-Spoofing and Session-Hijacking Attacks	p. 89
TCP/IP Denial of Service	p. 90
IP and ICMP Fragmentation	p. 92
Attacks on Cryptography	p. 95
Cryptanalysis	p. 95
Testing for Weak Keys	p. 97
Block Replay	p. 97
Man-in-the-Middle Attacks	p. 97
Countermeasures for Attacks Against Cryptographic Mechanisms	p. 98
Social Engineering and Dumpster Diving	p. 100
References	p. 100
Broadband Networking Technologies	p. 103
The Origins of Broadband	p. 104
The ISO/OSI Reference Model	p. 106
Layer 7--Application	p. 107
Layer 6--Presentation	p. 107
Layer 5--Session	p. 107
Layer 4--Transport	p. 107
Layer 3--Network	p. 108
Layer 2--Data Link	p. 108
Layer 1--Physical	p. 109
The TCP/IP Reference Model	p. 110
Data Encapsulation	p. 111
Communication Protocol Characteristics	p. 113
Service Provider Networks	p. 114
Cable	p. 115
Digital Subscriber Line	p. 120
Fixed Wireless Technology	p. 123
Two-Way Satellite Communication	p. 126
Quality of Service	p. 129
QoS Parameters	p. 130
Degrees of QoS	p. 136
The Great Debate: Cell-Relay vs. Standard Packet Switching	p. 136
Models for QoS over IP Networks	p. 139
References	p. 143
A Survey of Existing Broadband Security Standards and Specifications	p. 145
Standards Bodies and the Role of Standardization	p. 146
ANSI (American National Standards Institute)	p. 146
The BWIF (Broadband Wireless Internet Forum)	p. 146
Cable Television Laboratories	p. 147
The DVB (Digital Video Broadcasting) Project	p. 147
The DSL Forum	p. 147
ETSI (European Telecommunications Standards Institute)	p. 147
The IETF (Internet Engineering Task Force)	p. 148
The ITU (International Telecommunication Union)	p. 148
The IEEE (Institute of Electrical and Electronics Engineers)	p. 148
The ISO (International Standards Organization)	p. 148
Current Broadband Security Standards and Specifications	p. 149
The DOCSIS 1.0 Baseline Privacy Interface	p. 149
The DOCSIS 1.1 Baseline Privacy Plus Interface	p. 151
The PacketCable Security Specification	p. 154
The H.235 Security Standard	p. 154
The DVB Multimedia Home Platform	p. 160
The OpenCable Copy Protection System	p. 161
Security Gone Wrong--A Case Study of 802.11 WEP Encryption	p. 165
References	p. 168
Broadband Security Design Considerations
Existing Network Security Protocols	p. 171
IPSec	p. 172
Transport and Tunnel Modes	p. 174
Security Associations	p. 177
Security Policy Database	p. 179
Security Associations Database	p. 180
Authentication Header	p. 181
Encapsulating Security Payload	p. 186
Internet Key Exchange	p. 191
SSL and TLS	p. 197
A Brief History of SSL	p. 198
SSL in Detail	p. 198
Application Layer--Kerberos	p. 216
Kerberos Authentication	p. 217
Cross-Realm Authentication	p. 219
Public-Key Authentication with Kerberos	p. 220
References	p. 220
Placing Security Services and Mechanisms	p. 223
Binding Security Services and Mechanisms to Data	p. 223
Which Network Layer?	p. 225
Application Transparency	p. 225
Extent of Coverage	p. 230
Performance	p. 232
Comparing Existing Security Protocols	p. 233
Security Protocol Implementation	p. 234
Host-Based Security vs. Security Gateways	p. 237
Extent of Coverage	p. 238
Implementation, Configuration, and Maintenance	p. 241
Securing Traffic Between a Large Number of Hosts or Applications	p. 242
Distinct Traffic Flows	p. 243
User Contexts	p. 243
Coordination with Existing Security Policy	p. 244
A Final Word on Encryption and Protocol Headers	p. 245
References	p. 245
Security Side Effects	p. 247
Network Performance and QoS	p. 248
Embedded Device Constraints	p. 249
Cryptography and Performance	p. 250
General Considerations for Choosing Cryptographic Algorithms	p. 251
Dedicated Cryptographic Hardware	p. 262
Encryption and Compression	p. 263
Security Protocol Tuning	p. 264
Additional Tips for Improving Security in Real-Time Multimedia Applications	p. 265
Manageability	p. 266
References	p. 269
Case Studies
Securing Broadband Internet Access: DOCSIS BPI+	p. 273
An Overview of the Baseline Privacy Plus Interface	p. 275
DOCSIS MAC Layer Frame Formats	p. 277
Baseline Privacy Key Management Protocol	p. 279
Authorization State Machine	p. 280
TEK State Machine	p. 285
BPI+ Key Encryption, Traffic Encryption, and Authentication Algorithms	p. 289
DOCSIS 1.1 BPI+ X.509 Certificate Usage and PKI Hierarchies	p. 292
BPI+ Cable Modem Certificate Hierarchy	p. 292
BPI+ Certificate Formats	p. 297
Certificate Validation on the CMTS	p. 301
Certificate Revocation and Hot Lists	p. 303
TFTP Configuration Files	p. 303
Signed Software Upgrade Verification	p. 304
Generation and Verification of Signed Software Upgrade Files	p. 307
References	p. 309
Securing Real-Time Multimedia: PacketCable Security	p. 311
Overview of PacketCable Security	p. 319
IPSec	p. 322
Internet Key Exchange	p. 325
SNMPv3 Security	p. 326
PacketCable's Use of kerberos	p. 327
Kerberized Key Management for IPSec and SNMPv3	p. 330
Cross-Realm Operation	p. 336
Securing RTP and RTCP	p. 337
Key Management for RTP and RTCP	p. 341
PacketCable Security Certificate Usage and PKI Hierarchies	p. 345
PacketCable Certificate Validation	p. 356
Physical Protection of Keying Material	p. 357
Secure Software Upgrades	p. 358
References	p. 358
Securing Interactive Television: DVB MHP Security	p. 359
The Multimedia Home Platform	p. 360
MHP Security Overview	p. 362
Authentication Messages	p. 363
Hash Files	p. 365
Signature Files	p. 366
Certificate Files	p. 368
The Object Authentication Process	p. 369
MHP X.509 Certificate Usage and PKI Hierarchy	p. 372
Storage and Management of Root Certificates	p. 373
Certificate Revocation	p. 374
Application Security Policy	p. 375
Permission Request File	p. 375
Return Channel Security	p. 379
Supported Java Security Classes	p. 380
References	p. 381
Design Scenarios	p. 383
Initial Design Steps	p. 383
Identify Your Assets and Assess Their Value	p. 384
Identifying the Threats	p. 385
Selecting the Appropriate Security Services	p. 386
Choosing Suitable Security Mechanisms	p. 388
Identifying the Need for Persistent Security Services and Mechanisms	p. 390
Choosing a Network Layer	p. 391
Choosing Between Host-Based Security and Security Gateways	p. 391
Identifying Existing Security Protocols That Meet Your Needs	p. 392
Designing a New Protocol	p. 393
Sample Design Scenarios	p. 394
A Flawed Design	p. 394
Designing Security from the Ground Up	p. 403
TCP/IP Primer	p. 415
Encapsulation	p. 416
Internet Protocol	p. 417
IP Headers	p. 419
IP Routing	p. 423
Address Resolution Protocol and Reverse Address Resolution Protocol	p. 425
Internet Control Message Protocol	p. 426
Transmission Control Protocol	p. 429
TCP Headers	p. 430
Windowing	p. 432
User Datagram Protocol	p. 433
UDP Headers	p. 434
Resources	p. 435
Digital Certificates and Public-Key Infrastructure	p. 437
Digital Certificates	p. 437
Certificate Types and Classes	p. 439
Contents of a Digital Certificate	p. 440
Validating a Digital Certificate	p. 443
Certificate Revocation	p. 445
Public-Key Infrastructure	p. 448
CA Operations	p. 448
Trust Models	p. 450
Path Discovery and Validation	p. 454
References	p. 455
Index	p. 457
Table of Contents provided by Syndetics. All Rights Reserved.

RSA Press

At a Glance

Paperback

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