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Configuration Examples

308630-15.1 Rev 00

C-13

SA Example 3: Configuring Multiple Protect/Unprotect SA Pairs

In this example, multiple Protect/Unprotect SA pairs are configured between

RTR1 and RTR2, RTR3, and RTR4.

• The SA pair between RTR1 and RTR2 uses DES56 and HMAC MD5.

• The SA pair between RTR1 and RTR3 uses only DES56.

• The SA pair between RTR1 and RTR4 uses only HMAC MD5.

As you review the examples, refer to Figure C-4

Figure C-4. Multiple Protect/Unprotect SA Pairs

RTR1

INET

S31 - 119.68.12.1

RTR3

129.43.12.19 - S28

RTR2

189.132.10.1 - S52

RTR4

192.32.1.5 - S33

Internet

1 2 ... 90 91 92 93 94 95 96 97 98 99 100 ... 121 122

Configuring IPsec Services 1
Trademarks 2
Restricted Rights Legend 2
Statement of Conditions 2
Contents 5
308630-15.1 Rev 00 vii 7
308630-15.1 Rev 00 ix 9
308630-15.1 Rev 00 xi 11
Before You Begin 13
Text Conventions 14
Acronyms 15
Hard-Copy Technical Manuals 16
How to Get Help 17
Chapter 1 19
Overview of IPsec 19
About IPsec 20
Supported Routers 21
Supported WAN Protocols 21
IPsec Services 22
How IPsec Works 23
IPsec Tunnel Mode 24
IPsec Elements 25
Security Gateways 26
Security Policies 26
Security Associations 29
Security Protocols 33
Performance Considerations 35
Chapter 2 37
Installing IPsec 37
Installing the IPsec Software 38
Securing Your Site 40
Securing Your Configuration 40
Creating and Using NPKs 41
Caution: 42
Changing an NPK 43
Monitoring NPKs 44
Chapter 3 45
Starting IPsec 45
Creating Policies 46
Specifying an Action 47
Policy Considerations 47
(continued) 48
Automated SA Creation 51
About Manual SA Creation 53
Chapter 4 57
Customizing IPsec 57
Editing a Policy 58
Adding a Policy 59
Reordering Policies 62
Modifying Automated SAs (IKE) 64
Modifying Manual SAs 65
Disabling IPsec 67
Appendix A 69
Site Manager Parameters 69
Node Protection Key Parameter 70
IPsec Parameters 71
IPsec Policy Parameters 72
Appendix B 81
Definitions of k Commands 81
Appendix C 83
Configuration Examples 83
192.32.10.0 85
192.32.20.0 86
Manual SA Policy Examples 87
RTR1 92
RTR2 92
RTR3 95
RTR4 95
Appendix D 99
IPsec Terminology 100
Configuration Considerations 101
Feature Comparison Summary 102
308630-15.1 Rev 00 103
BayRS Tools 104
Contivity Tools 104
Symptoms You May See 105
Protocol Numbers 107
Appendix E 107

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