Security in an IPv6 Environment

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ISBN: 9781420092295 | 1420092294
Cover: Hardcover
Copyright: 12/16/2008

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Navigate the IP Transition and Address Security Concerns As Internet Protocol Version 6 (IPv6) becomes an institutional imperative to support billions of intelligent systems requiring explicit end-to-end device addressability, questions emerge about the security of an IPv6-based architecture and the strategies for transition from IPv4.

Preface	p. xiii
About the Authors	p. xv
Introduction, Overview, and Motivations	p. 1
Introduction and Motivations	p. 1
IPv6 Overview	p. 8
Overview of Traditional Security Approaches and Mechanisms	p. 33
References	p. 47
Six-Month Listing of IPv6 Press	p. 50
Basic IPv6 Protocol Mechanisms	p. 69
Introduction	p. 69
IPv6 Addressing Mechanisms	p. 69
Addressing Conventions	p. 70
Note	p. 72
Addressing Issues/Reachability	p. 72
Note	p. 75
Address Types	p. 76
Unicast IPv6 Addresses	p. 76
Aggregatable Global Unicast Addresses	p. 77
Link-Local (Unicast) Addresses	p. 77
Unspecified (Unicast) Address	p. 78
Loopback (Unicast) Address	p. 78
Compatibility (Unicast) Addresses	p. 78
Multicast IPv6 Addresses	p. 78
Anycast IPv6 Addresses	p. 81
Addresses for Hosts and Routers	p. 81
Interface Determination	p. 82
Mapping EUI-64 Addresses to IPv6 Interface Identifiers	p. 83
Mapping IEEE 802 Addresses to IPv6 Interface Identifers	p. 84
Randomly Generated Interface Identifiers	p. 84
IPv6 Addressing (Details)	p. 85
Addressing Model	p. 85
Text Representation of Addresses	p. 86
Text Representation of Address Prefixes	p. 87
Address Type Identification	p. 88
Unicast Addresses	p. 88
Interface Identifiers	p. 89
The Unspecified Address	p. 90
The Loopback Address	p. 90
Global Unicast Addresses	p. 90
IPv6 Addresses with Embedded IPv4 Addresses	p. 91
Note	p. 91
Local-Use IPv6 Unicast Addresses	p. 91
Anycast Addresses	p. 92
Required Anycast Address	p. 93
Multicast Addresses	p. 93
Predefined Multicast Addresses	p. 94
A Node's Required Addresses	p. 96
IANA Considerations	p. 96
Notes	p. 97
Creating Modified EUI-64 Format Interface Identifiers	p. 97
Links or Nodes with IEEE EUI-64 Identifiers	p. 97
Links or Nodes with IEEE 802 48-bit MACs	p. 98
Links with Other Kinds of Identifiers	p. 98
Links without Identifiers	p. 99
64-Bit Global Identifier (EUI-64) Registration Authority	p. 99
Application Restrictions	p. 100
Distribution Restrictions	p. 100
Application Documentation	p. 100
Manufacturer-Assigned Identifiers	p. 101
References	p. 101
More Advanced IPv6 Protocol Mechanisms	p. 105
Introduction	p. 105
IPv6 and Related Protocols (Details)	p. 106
Note	p. 107
IPv6 Header Format	p. 107
IPv6 Extension Headers	p. 108
Extension Header Order	p. 109
Options	p. 110
Note	p. 112
Hop-by-Hop Options Header	p. 112
Routing Header	p. 113
Fragment Header	p. 116
Note	p. 117
Destination Options Header	p. 121
No Next Header	p. 122
Packet Size Issues	p. 122
Flow Labels	p. 123
Traffic Classes	p. 123
Upper-Layer Protocol Issues	p. 124
Upper-Layer Checksums	p. 124
Maximum Packet Lifetime	p. 125
Maximum Upper-Layer Payload Size	p. 125
Responding to Packets Carrying Routing Headers	p. 125
Semantics and Usage of the Flow Label Field	p. 126
Formatting Guidelines for Options	p. 127
IPv6 Infrastructure	p. 130
Protocol Mechanisms	p. 130
Protocol-Support Mechanisms	p. 130
Routing and Route Management	p. 134
Configuration Methods	p. 136
Dynamic Host Configuration Protocol for IPv6	p. 138
More on Transition Approaches and Mechanisms	p. 142
References	p. 144
Neighbor Discovery for IP Version 6 (IPv6) Protocol	p. 145
Functionality	p. 145
Mobile IP Version 6 (MIPv6)	p. 150
Basic Operation of Mobile IPv6	p. 151
Enabling IPv6 in Cisco Routers	p. 156
Enabling IPv6 Routing and Configuring IPv6 Addressing	p. 156
Enabling IPv6 Processing Globally on the Router	p. 156
Configuring IPv6 Addresses	p. 156
Verifying IPv6 Operation and Address Configuration	p. 157
IPv6 Routing and IPv6 Address Configuration Example	p. 160
Security Mechanisms and Approaches	p. 163
Introduction	p. 163
Security 101	p. 163
Review of Firewall-Based Perimeter Security	p. 174
Firewall Capabilities	p. 176
Network Address Translation (NAT)	p. 177
Virtual Private Network (VPN)	p. 177
Demilitarized Zones (DMZ)	p. 177
Antispoofing	p. 177
Firewall Types	p. 178
Packet Filter	p. 179
Proxy	p. 179
Stateful Inspection	p. 180
Firewall Architecture	p. 181
IPv6 Areas of Security Concerns: Addresses	p. 182
IPv6 Addressing Security	p. 182
IPv6 Anycast Address Security	p. 186
Documented Issues for IPv6 Security	p. 186
References	p. 188
Risks and Vulnerabilities	p. 190
Static Session Hijacking	p. 190
Redirection Attacks	p. 191
Denial of Service (Flooding Attacks)	p. 192
Address Privacy	p. 193
Cause Packets to Be Sent to the Attacker	p. 193
"Classic" Redirection Attack	p. 193
Time-Shifting Attack	p. 194
Cause Packets to Be Sent to a Black Hole	p. 194
Third Party Denial-of-Service Attacks	p. 194
Basic IPv6 Security Considerations	p. 195
Introduction	p. 195
IPv6 Flow Labels Issues	p. 195
ICMPv6 Issues	p. 197
Neighbor Discovery Issues	p. 198
Routing Headers	p. 202
DNS Issues	p. 203
Minimum Security Plan	p. 204
References	p. 205
IPsec and Its Use in IPv6 Environments	p. 207
Introduction	p. 207
Overview	p. 208
IPsec Modes	p. 210
IP Authentication Header (AH)	p. 213
IP Encapsulating Security Protocol (ESP)	p. 214
Supportive Infrastructure: IPSec Architecture	p. 217
Related Observations	p. 220
References	p. 222
Firewall Use in IPv6 Environments	p. 225
Introduction	p. 225
Role of Firewalls for IPv6 Perimeters	p. 226
Packet Filtering	p. 231
Extension Headers and Fragmentation	p. 235
Concurrent Processing	p. 237
Firewall Functionality	p. 237
Related Tools	p. 238
References	p. 241
Market Status	p. 241
Security Considerations for Migrations/Mixed IPv4-IPv6 Networks	p. 243
Introduction	p. 243
Transition Basics	p. 243
Security Issues Associated with Transition	p. 249
Threats and the Use of IPsec	p. 256
IPsec in Transport Mode	p. 256
IPsec in Tunnel Mode	p. 257
Router-to-Router Tunnels	p. 257
Site-to-Router/Router-to-Site Tunnels	p. 258
Host-to-Host Tunnels	p. 258
NATs, Packet Filtering, and Teredo	p. 260
Use of Host-Based Firewalls	p. 262
Use of Distributed Firewalls	p. 264
References	p. 265
Index	p. 267
Table of Contents provided by Ingram. All Rights Reserved.

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Security in an IPv6 Environment

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