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User Guide for Cisco Secure ACS for

Windows Server

Version 3.3

May 2004

Customer Order Number: DOC-7816592=

Text Part Number: 78-16592-01

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User Guide for Cisco Secure ACS for Windows Server

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iii

User Guide for Cisco Secure ACS for Windows Server

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CONTENTS

Preface xxix

Audience xxix

Organization xxix

Conventions xxxi

Product Documentation xxxii

Related Documentation xxxiii

Obtaining Documentation xxxv

Cisco.com xxxvi

Ordering Documentation xxxvi

Documentation Feedback xxxvi

Obtaining Technical Assistance xxxvii

Cisco Technical Support Website xxxvii

Submitting a Service Request xxxvii

Definitions of Service Request Severity xxxviii

Obtaining Additional Publications and Information xxxix

CHAPTER

1Overview 1-1

The Cisco Secure ACS Paradigm 1-2

Cisco Secure ACS Specifications 1-3

System Performance Specifications 1-3

Cisco Secure ACS Windows Services 1-4

AAA Server Functions and Concepts 1-5

Cisco Secure ACS and the AAA Client 1-6

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AAA Protocols—TACACS+ and RADIUS 1-6

TACACS+ 1-7

RADIUS 1-7

Authentication 1-8

Authentication Considerations 1-9

Authentication and User Databases 1-10

Authentication Protocol-Database Compatibility 1-10

Passwords 1-11

Other Authentication-Related Features 1-16

Authorization 1-17

Max Sessions 1-18

Dynamic Usage Quotas 1-18

Shared Profile Components 1-19

Support for Cisco Device-Management Applications 1-19

Other Authorization-Related Features 1-21

Accounting 1-22

Other Accounting-Related Features 1-22

Administration 1-23

HTTP Port Allocation for Administrative Sessions 1-23

Network Device Groups 1-24

Other Administration-Related Features 1-24

Posture Validation 1-25

Cisco Secure ACS HTML Interface 1-25

About the Cisco Secure ACS HTML Interface 1-26

HTML Interface Security 1-26

HTML Interface Layout 1-27

Uniform Resource Locator for the HTML Interface 1-29

Network Environments and Administrative Sessions 1-30

Administrative Sessions and HTTP Proxy 1-30

Administrative Sessions through Firewalls 1-31

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Contents

Administrative Sessions through a NAT Gateway 1-31

Accessing the HTML Interface 1-32

Logging Off the HTML Interface 1-33

Online Help and Online Documentation 1-33

Using Online Help 1-34

Using the Online Documentation 1-34

CHAPTER

2Deployment Considerations 2-1

Basic Deployment Requirements for Cisco Secure ACS 2-2

System Requirements 2-2

Hardware Requirements 2-2

Operating System Requirements 2-2

Third-Party Software Requirements 2-3

Network and Port Requirements 2-4

Basic Deployment Factors for Cisco Secure ACS 2-6

Network Topology 2-6

Dial-Up Topology 2-6

Wireless Network 2-9

Remote Access using VPN 2-12

Remote Access Policy 2-14

Security Policy 2-15

Administrative Access Policy 2-15

Separation of Administrative and General Users 2-17

Database 2-18

Number of Users 2-18

Type of Database 2-18

Network Latency and Reliability 2-19

Suggested Deployment Sequence 2-19

Contents

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CHAPTER

3Interface Configuration 3-1

Interface Design Concepts 3-2

User-to-Group Relationship 3-2

Per-User or Per-Group Features 3-2

User Data Configuration Options 3-3

Defining New User Data Fields 3-3

Advanced Options 3-4

Setting Advanced Options for the Cisco Secure ACS User Interface 3-6

Protocol Configuration Options for TACACS+ 3-7

Setting Options for TACACS+ 3-9

Protocol Configuration Options for RADIUS 3-11

Setting Protocol Configuration Options for IETF RADIUS Attributes 3-16

Setting Protocol Configuration Options for Non-IETF RADIUS Attributes 3-17

CHAPTER

4Network Configuration 4-1

About Network Configuration 4-1

About Distributed Systems 4-2

AAA Servers in Distributed Systems 4-3

Default Distributed System Settings 4-3

Proxy in Distributed Systems 4-4

Fallback on Failed Connection 4-5

Character String 4-6

Stripping 4-6

Proxy in an Enterprise 4-6

Remote Use of Accounting Packets 4-7

Other Features Enabled by System Distribution 4-8

Network Device Searches 4-8

Network Device Search Criteria 4-8

Searching for Network Devices 4-9

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Contents

AAA Client Configuration 4-11

AAA Client Configuration Options 4-11

Adding a AAA Client 4-16

Editing a AAA Client 4-19

Deleting a AAA Client 4-21

AAA Server Configuration 4-21

AAA Server Configuration Options 4-22

Adding a AAA Server 4-24

Editing a AAA Server 4-26

Deleting a AAA Server 4-28

Network Device Group Configuration 4-28

Adding a Network Device Group 4-29

Assigning an Unassigned AAA Client or AAA Server to an NDG 4-30

Reassigning a AAA Client or AAA Server to an NDG 4-31

Renaming a Network Device Group 4-32

Deleting a Network Device Group 4-32

Proxy Distribution Table Configuration 4-34

About the Proxy Distribution Table 4-34

Adding a New Proxy Distribution Table Entry 4-35

Sorting the Character String Match Order of Distribution Entries 4-36

Editing a Proxy Distribution Table Entry 4-37

Deleting a Proxy Distribution Table Entry 4-38

CHAPTER

5Shared Profile Components 5-1

About Shared Profile Components 5-1

Network Access Filters 5-2

About Network Access Filters 5-2

Adding a Network Access Filter 5-3

Editing a Network Access Filter 5-5

Contents

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Deleting a Network Access Filter 5-7

Downloadable IP ACLs 5-7

About Downloadable IP ACLs 5-8

Adding a Downloadable IP ACL 5-10

Editing a Downloadable IP ACL 5-13

Deleting a Downloadable IP ACL 5-14

Network Access Restrictions 5-14

About Network Access Restrictions 5-15

About IP-based NAR Filters 5-17

About Non-IP-based NAR Filters 5-18

Adding a Shared Network Access Restriction 5-19

Editing a Shared Network Access Restriction 5-23

Deleting a Shared Network Access Restriction 5-24

Command Authorization Sets 5-25

About Command Authorization Sets 5-26

Command Authorization Sets Description 5-26

Command Authorization Sets Assignment 5-28

Case Sensitivity and Command Authorization 5-29

Arguments and Command Authorization 5-29

About Pattern Matching 5-30

Adding a Command Authorization Set 5-31

Editing a Command Authorization Set 5-33

Deleting a Command Authorization Set 5-35

CHAPTER

6User Group Management 6-1

About User Group Setup Features and Functions 6-2

Default Group 6-2

Group TACACS+ Settings 6-2

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Contents

Basic User Group Settings 6-3

Group Disablement 6-4

Enabling VoIP Support for a User Group 6-4

Setting Default Time-of-Day Access for a User Group 6-5

Setting Callback Options for a User Group 6-7

Setting Network Access Restrictions for a User Group 6-8

Setting Max Sessions for a User Group 6-12

Setting Usage Quotas for a User Group 6-14

Configuration-specific User Group Settings 6-16

Setting Token Card Settings for a User Group 6-18

Setting Enable Privilege Options for a User Group 6-19

Enabling Password Aging for the CiscoSecure User Database 6-21

Enabling Password Aging for Users in Windows Databases 6-26

Setting IP Address Assignment Method for a User Group 6-28

Assigning a Downloadable IP ACL to a Group 6-30

Configuring TACACS+ Settings for a User Group 6-31

Configuring a Shell Command Authorization Set for a User Group 6-33

Configuring a PIX Command Authorization Set for a User Group 6-35

Configuring Device-Management Command Authorization for a User

Group 6-37

Configuring IETF RADIUS Settings for a User Group 6-38

Configuring Cisco IOS/PIX RADIUS Settings for a User Group 6-40

Configuring Cisco Aironet RADIUS Settings for a User Group 6-41

Configuring Ascend RADIUS Settings for a User Group 6-43

Configuring Cisco VPN 3000 Concentrator RADIUS Settings for a User

Group 6-44

Configuring Cisco VPN 5000 Concentrator RADIUS Settings for a User

Group 6-46

Configuring Microsoft RADIUS Settings for a User Group 6-47

Configuring Nortel RADIUS Settings for a User Group 6-49

Configuring Juniper RADIUS Settings for a User Group 6-50

Contents

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Configuring BBSM RADIUS Settings for a User Group 6-51

Configuring Custom RADIUS VSA Settings for a User Group 6-53

Group Setting Management 6-54

Listing Users in a User Group 6-54

Resetting Usage Quota Counters for a User Group 6-55

Renaming a User Group 6-55

Saving Changes to User Group Settings 6-56

CHAPTER

7User Management 7-1

About User Setup Features and Functions 7-1

About User Databases 7-2

Basic User Setup Options 7-3

Adding a Basic User Account 7-4

Setting Supplementary User Information 7-6

Setting a Separate CHAP/MS-CHAP/ARAP Password 7-7

Assigning a User to a Group 7-8

Setting User Callback Option 7-9

Assigning a User to a Client IP Address 7-10

Setting Network Access Restrictions for a User 7-11

Setting Max Sessions Options for a User 7-16

Setting User Usage Quotas Options 7-18

Setting Options for User Account Disablement 7-20

Assigning a Downloadable IP ACL to a User 7-21

Advanced User Authentication Settings 7-22

TACACS+ Settings (User) 7-23

Configuring TACACS+ Settings for a User 7-24

Configuring a Shell Command Authorization Set for a User 7-26

Configuring a PIX Command Authorization Set for a User 7-29

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