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Chapter 2 Deployment Considerations

Suggested Deployment Sequence

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User Guide for Cisco Secure ACS for Windows Server

78-16592-01

Contents

Main User Guide for Cisco Secure ACS for Windows Server Version 3.3 May 2004 Page CONTENTS Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Preface Audience Organization Page Conventions Product Documentation Related Documentation Page Obtaining Documentation Cisco.com Ordering Documentation Documentation Feedback Obtaining Technical Assistance Cisco Technical Support Website Submitting a Service Request Definitions of Service Request Severity Obtaining Additional Publications and Information Page Overview The Cisco Secure ACS Paradigm Cisco Secure ACS Specifications System Performance Specifications Cisco Secure ACS Windows Services AAA Server Functions and Concepts Cisco Secure ACS and the AAA Client AAA ProtocolsTACACS+ and RADIUS TACACS+ RADIUS Authentication Authentication Considerations Authentication and User Databases Authentication Protocol-Database Compatibility Passwords Comparing PAP, CHAP, and ARAP MS-CHAP EAP Support Basic Password Configurations Advanced Password Configurations Password Aging User-Changeable Passwords Other Authentication-Related Features Authorization Max Sessions Dynamic Usage Quotas Shared Profile Components Support for Cisco Device-Management Applications Page Other Authorization-Related Features Accounting Other Accounting-Related Features Administration HTTP Port Allocation for Administrative Sessions Network Device Groups Other Administration-Related Features Posture Validation Cisco Secure ACS HTML Interface About the Cisco Secure ACS HTML Interface HTML Interface Security HTML Interface Layout Page Uniform Resource Locator for the HTML Interface Network Environments and Administrative Sessions Administrative Sessions and HTTP Proxy Administrative Sessions through Firewalls Administrative Sessions through a NAT Gateway Accessing the HTML Interface Logging Off the HTML Interface Online Help and Online Documentation Using Online Help Using the Online Documentation Page Page Deployment Considerations Basic Deployment Requirements for Cisco Secure ACS System Requirements Hardware Requirements Operating System Requirements Third-Party Software Requirements Network and Port Requirements Page Basic Deployment Factors for Cisco Secure ACS Network Topology Dial-Up Topology Page Page Wireless Network Page Page Remote Access using VPN I Page Remote Access Policy Security Policy Administrative Access Policy Page Separation of Administrative and General Users Database Number of Users Type of Database Network Latency and Reliability Suggested Deployment Sequence Page Page Page Interface Configuration Interface Design Concepts User-to-Group Relationship Per-User or Per-Group Features User Data Configuration Options Defining New User Data Fields Advanced Options Page Setting Advanced Options for the Cisco Secure ACS User Interface Protocol Configuration Options for TACACS+ Page Setting Options for TACACS+ Page Protocol Configuration Options for RADIUS Page Page Page Page Setting Protocol Configuration Options for IETF RADIUS Attributes Setting Protocol Configuration Options for Non-IETF RADIUS Attributes Page Network Configuration About Network Configuration About Distributed Systems AAA Servers in Distributed Systems Default Distributed System Settings Proxy in Distributed Systems Fallback on Failed Connection Character String Stripping Proxy in an Enterprise Remote Use of Accounting Packets Other Features Enabled by System Distribution Network Device Searches Network Device Search Criteria Searching for Network Devices Page AAA Client Configuration AAA Client Configuration Options Page Page Page Page Adding a AAA Client Page Page Editing a AAA Client Page Deleting a AAA Client AAA Server Configuration AAA Server Configuration Options Page Adding a AAA Server Page Editing a AAA Server Page Deleting a AAA Server Network Device Group Configuration Adding a Network Device Group Assigning an Unassigned AAA Client or AAA Server to an NDG Reassigning a AAA Client or AAA Server to an NDG Renaming a Network Device Group Deleting a Network Device Group Page Proxy Distribution Table Configuration About the Proxy Distribution Table Adding a New Proxy Distribution Table Entry Sorting the Character String Match Order of Distribution Entries Editing a Proxy Distribution Table Entry Deleting a Proxy Distribution Table Entry Shared Profile Components About Shared Profile Components Network Access Filters About Network Access Filters Adding a Network Access Filter Page Editing a Network Access Filter Page Deleting a Network Access Filter Downloadable IP ACLs About Downloadable IP ACLs Page Adding a Downloadable IP ACL Page Page Editing a Downloadable IP ACL Deleting a Downloadable IP ACL Network Access Restrictions About Network Access Restrictions Page About IP-based NAR Filters About Non-IP-based NAR Filters Adding a Shared Network Access Restriction Page Page Page Editing a Shared Network Access Restriction Deleting a Shared Network Access Restriction Command Authorization Sets About Command Authorization Sets Command Authorization Sets Description Page Command Authorization Sets Assignment Case Sensitivity and Command Authorization Arguments and Command Authorization About Pattern Matching Adding a Command Authorization Set Page Editing a Command Authorization Set Page Deleting a Command Authorization Set Page User Group Management About User Group Setup Features and Functions Default Group Group TACACS+ Settings Basic User Group Settings Group Disablement Enabling VoIP Support for a User Group Setting Default Time-of-Day Access for a User Group Page Setting Callback Options for a User Group Setting Network Access Restrictions for a User Group Page Page Page Setting Max Sessions for a User Group Page Setting Usage Quotas for a User Group Page Configuration-specific User Group Settings Page Setting Token Card Settings for a User Group Setting Enable Privilege Options for a User Group Page Enabling Password Aging for the CiscoSecure User Database Page Page Page Page Enabling Password Aging for Users in Windows Databases Page Setting IP Address Assignment Method for a User Group Page Assigning a Downloadable IP ACL to a Group Configuring TACACS+ Settings for a User Group Page Configuring a Shell Command Authorization Set for a User Group Page Configuring a PIX Command Authorization Set for a User Group Page Configuring Device-Management Command Authorization for a Configuring IETF RADIUS Settings for a User Group Page Configuring Cisco IOS/PIX RADIUS Settings for a User Group Configuring Cisco Aironet RADIUS Settings for a User Group Page Configuring Ascend RADIUS Settings for a User Group Configuring Cisco VPN 3000 Concentrator RADIUS Settings for a Page Configuring Cisco VPN 5000 Concentrator RADIUS Settings for a Configuring Microsoft RADIUS Settings for a User Group Page Configuring Nortel RADIUS Settings for a User Group Configuring Juniper RADIUS Settings for a User Group Configuring BBSM RADIUS Settings for a User Group Page Configuring Custom RADIUS VSA Settings for a User Group Group Setting Management Listing Users in a User Group Resetting Usage Quota Counters for a User Group Renaming a User Group Saving Changes to User Group Settings User Management About User Setup Features and Functions About User Databases Basic User Setup Options Adding a Basic User Account Page Setting Supplementary User Information Setting a Separate CHAP/MS-CHAP/ARAP Password Assigning a User to a Group Setting User Callback Option Assigning a User to a Client IP Address Setting Network Access Restrictions for a User Page Page Page Page Setting Max Sessions Options for a User Page Setting User Usage Quotas Options Page Setting Options for User Account Disablement Assigning a Downloadable IP ACL to a User Advanced User Authentication Settings TACACS+ Settings (User) Configuring TACACS+ Settings for a User Page Configuring a Shell Command Authorization Set for a User Page Page Configuring a PIX Command Authorization Set for a User Configuring Device-Management Command Authorization for a User Page Configuring the Unknown Service Setting for a User Advanced TACACS+ Settings (User) Setting Enable Privilege Options for a User Page Setting TACACS+ Enable Password Options for a User Page Setting TACACS+ Outbound Password for a User RADIUS Attributes Setting IETF RADIUS Parameters for a User Setting Cisco IOS/PIX RADIUS Parameters for a User Page Setting Cisco Aironet RADIUS Parameters for a User Page Setting Ascend RADIUS Parameters for a User Setting Cisco VPN 3000 Concentrator RADIUS Parameters for a User Page Setting Cisco VPN 5000 Concentrator RADIUS Parameters for a User Setting Microsoft RADIUS Parameters for a User Page Setting Nortel RADIUS Parameters for a User Page Setting Juniper RADIUS Parameters for a User Setting BBSM RADIUS Parameters for a User Setting Custom RADIUS Attributes for a User User Management Listing All Users Finding a User Disabling a User Account Deleting a User Account Resetting User Session Quota Counters Resetting a User Account after Login Failure Saving User Settings System Configuration: Basic Service Control Determining the Status of Cisco Secure ACS Services Stopping, Starting, or Restarting Services Logging Date Format Control Setting the Date Format Page Local Password Management Page Configuring Local Password Management Page Cisco Secure ACS Backup About Cisco Secure ACS Backup Backup File Locations Directory Management Components Backed Up Reports of Cisco Secure ACS Backups Backup Options Performing a Manual Cisco Secure ACS Backup Scheduling Cisco Secure ACS Backups Disabling Scheduled Cisco Secure ACS Backups Cisco Secure ACS System Restore About Cisco Secure ACS System Restore Backup Filenames and Locations Components Restored Reports of Cisco Secure ACS Restorations Restoring Cisco Secure ACS from a Backup File Cisco Secure ACS Active Service Management System Monitoring System Monitoring Options Setting Up System Monitoring Event Logging Setting Up Event Logging VoIP Accounting Configuration Configuring VoIP Accounting Page System Configuration: Advanced CiscoSecure Database Replication About CiscoSecure Database Replication Page Replication Process Page Page Replication Frequency Important Implementation Considerations Page Page Database Replication Versus Database Backup Database Replication Logging Replication Options Replication Components Options Outbound Replication Options Page Page Inbound Replication Options Implementing Primary and Secondary Replication Setups on Cisco Secure ACSes Page Configuring a Secondary Cisco Secure ACS Page Replicating Immediately Page Scheduling Replication Page Page Disabling CiscoSecure Database Replication Database Replication Event Errors RDBMS Synchronization About RDBMS Synchronization Users User Groups Network Configuration Custom RADIUS Vendors and VSAs RDBMS Synchronization Components About CSDBSync Page About the accountActions Table Cisco Secure ACS Database Recovery Using the accountActions Table Reports and Event (Error) Handling Preparing to Use RDBMS Synchronization Page Considerations for Using CSV-Based Synchronization Preparing for CSV-Based Synchronization Configuring a System Data Source Name for RDBMS Synchronization RDBMS Synchronization Options RDBMS Setup Options Synchronization Scheduling Options Synchronization Partners Options Performing RDBMS Synchronization Immediately Scheduling RDBMS Synchronization Page Disabling Scheduled RDBMS Synchronizations IP Pools Server About IP Pools Server Allowing Overlapping IP Pools or Forcing Unique Pool Address Ranges Page Refreshing the AAA Server IP Pools Table Adding a New IP Pool Editing an IP Pool Definition Resetting an IP Pool Deleting an IP Pool IP Pools Address Recovery Enabling IP Pool Address Recovery Page System Configuration: Authentication and Certificates About Certification and EAP Protocols Digital Certificates EAP-TLS Authentication About the EAP-TLS Protocol EAP-TLS and Cisco Secure ACS Page EAP-TLS Limitations Enabling EAP-TLS Authentication PEAP Authentication About the PEAP Protocol PEAP and Cisco Secure ACS Page PEAP and the Unknown User Policy Enabling PEAP Authentication EAP-FAST Authentication About EAP-FAST Page About Master Keys Page About PACs Automatic PAC Provisioning Page Manual PAC Provisioning Master Key and PAC TTLs Replication and EAP-FAST Page Page Enabling EAP-FAST Global Authentication Setup Authentication Configuration Options Page Page Page Page Page Configuring Authentication Options Cisco Secure ACS Certificate Setup Installing a Cisco Secure ACS Server Certificate Page Adding a Certificate Authority Certificate Editing the Certificate Trust List Page Managing Certificate Revocation Lists About Certificate Revocation Lists Certificate Revocation List Configuration Options Adding a Certificate Revocation List Issuer Page Editing a Certificate Revocation List Issuer Deleting a Certificate Revocation List Issuer Generating a Certificate Signing Request Page Using Self-Signed Certificates About Self-Signed Certificates Self-Signed Certificate Configuration Options Generating a Self-Signed Certificate Updating or Replacing a Cisco Secure ACS Certificate Page Page Logs and Reports Logging Formats Special Logging Attributes Page NAC Attributes in Logs Update Packets in Accounting Logs About Cisco Secure ACS Logs and Reports Accounting Logs Page Page Dynamic Administration Reports Viewing the Logged-in Users Report Deleting Logged-in Users Viewing the Disabled Accounts Report Cisco Secure ACS System Logs Configuring the Administration Audit Log Working with CSV Logs CSV Log File Names CSV Log File Locations Enabling or Disabling a CSV Log Viewing a CSV Report Configuring a CSV Log Page Working with ODBC Logs Preparing for ODBC Logging Configuring a System Data Source Name for ODBC Logging Configuring an ODBC Log Page Page Remote Logging About Remote Logging Implementing Centralized Remote Logging Remote Logging Options Enabling and Configuring Remote Logging Page Disabling Remote Logging Service Logs Services Logged Configuring Service Logs Page Administrators and Administrative Policy Administrator Accounts About Administrator Accounts Administrator Privileges Page Page Adding an Administrator Account Editing an Administrator Account Page Page Unlocking a Locked Out Administrator Account Deleting an Administrator Account Access Policy Access Policy Options Page Setting Up Access Policy Page Session Policy Session Policy Options Setting Up Session Policy Audit Policy User Databases CiscoSecure User Database About the CiscoSecure User Database User Import and Creation About External User Databases Authenticating with External User Databases External User Database Authentication Process Windows User Database Whats Supported with Windows User Databases Authentication with Windows User Databases Trust Relationships Windows Dial-up Networking Clients Windows Dial-up Networking Clients with a Domain Field Windows Dial-up Networking Clients without a Domain Field Usernames and Windows Authentication Username Formats and Windows Authentication Page Non-domain-qualified Usernames Domain-Qualified Usernames UPN Usernames EAP and Windows Authentication EAP-TLS Domain Stripping Machine Authentication Page Page Machine Access Restrictions Microsoft Windows and Machine Authentication Page Enabling Machine Authentication Page Page User-Changeable Passwords with Windows User Databases Preparing Users for Authenticating with Windows Windows User Database Configuration Options Page Page Page Configuring a Windows External User Database Page Generic LDAP Cisco Secure ACS Authentication Process with a Generic LDAP User Database Multiple LDAP Instances LDAP Organizational Units and Groups Domain Filtering Page LDAP Failover Successful Previous Authentication with the Primary LDAP Server Unsuccessful Previous Authentication with the Primary LDAP Server LDAP Configuration Options Page Page Page Page Page Configuring a Generic LDAP External User Database Page Page Page Page Page Novell NDS Database About Novell NDS User Databases User Contexts Novell NDS External User Database Options Configuring a Novell NDS External User Database Page ODBC Database Page What is Supported with ODBC User Databases Cisco Secure ACS Authentication Process with an ODBC External User Database Preparing to Authenticate Users with an ODBC-Compliant Relational Database Implementation of Stored Procedures for ODBC Authentication Type Definitions Microsoft SQL Server and Case-Sensitive Passwords Sample Routine for Generating a PAP Authentication SQL Sample Routine for Generating an SQL CHAP Authentication Sample Routine for Generating an EAP-TLS Authentication PAP Authentication Procedure Input PAP Procedure Output CHAP/MS-CHAP/ARAP Authentication Procedure Input CHAP/MS-CHAP/ARAP Procedure Output EAP-TLS Authentication Procedure Input EAP-TLS Procedure Output Result Codes Configuring a System Data Source Name for an ODBC External User Database Configuring an ODBC External User Database Page Page Page LEAP Proxy RADIUS Server Database Configuring a LEAP Proxy RADIUS Server External User Database Page Token Server User Databases About Token Servers and Cisco Secure ACS Token Servers and ISDN RADIUS-Enabled Token Servers About RADIUS-Enabled Token Servers Token Server RADIUS Authentication Request and Response Contents Configuring a RADIUS Token Server External User Database Page Page RSA SecurID Token Servers Configuring an RSA SecurID Token Server External User Database Deleting an External User Database Configuration Page Page Network Admission Control About Network Admission Control NAC AAA Components Posture Validation Posture Tokens Non-Responsive NAC-Client Computers Implementing Network Admission Control Page Page Page Page NAC Databases About NAC Databases About NAC Credentials and Attributes NAC Database Configuration Options Policy Selection Options Configuring a NAC Database Page NAC Policies Local Policies About Local Policies About Rules, Rule Elements, and Attributes NAC Attribute Data Types Rule Operators Page Local Policy Configuration Options Page Rule Configuration Options Creating a Local Policy Page Page External Policies About External Policies External Policy Configuration Options Page Page Creating an External Policy Page Editing a Policy Page Deleting a Policy Page Page Unknown User Policy Known, Unknown, and Discovered Users Page Authentication and Unknown Users About Unknown User Authentication General Authentication of Unknown Users Windows Authentication of Unknown Users Domain-Qualified Unknown Windows Users Windows Authentication with Domain Qualification Multiple User Account Creation Performance of Unknown User Authentication Added Authentication Latency Authentication Timeout Value on AAA clients Posture Validation and the Unknown User Policy NAC and the Unknown User Policy Posture Validation Use of the Unknown User Policy Required Use for Posture Validation Authorization of Unknown Users Unknown User Policy Options Database Search Order Page Configuring the Unknown User Policy Disabling Unknown User Authentication Page User Group Mapping and Specification About User Group Mapping and Specification Group Mapping by External User Database Page Group Mapping by Group Set Membership Group Mapping Order No Access Group for Group Set Mappings Default Group Mapping for Windows Windows Group Mapping Limitations Creating a Cisco Secure ACS Group Mapping for Windows, Novell NDS, or Generic LDAP Groups Page Editing a Windows, Novell NDS, or Generic LDAP Group Set Mapping Deleting a Windows, Novell NDS, or Generic LDAP Group Set Mapping Deleting a Windows Domain Group Mapping Configuration Changing Group Set Mapping Order NAC Group Mapping Configuring NAC Group Mapping RADIUS-Based Group Specification Page Page A Troubleshooting Administration Issues Page Browser Issues Cisco IOS Issues Page Database Issues Page Page Dial-in Connection Issues Page Page Page Debug Issues Proxy Issues Installation and Upgrade Issues MaxSessions Issues Report Issues Page Third-Party Server Issues User Authentication Issues Page TACACS+ and RADIUS Attribute Issues B TACACS+ Attribute-Value Pairs Cisco IOS AV Pair Dictionary TACACS+ AV Pairs Page TACACS+ Accounting AV Pairs Page Page C RADIUS Attributes Cisco IOS Dictionary of RADIUS AV Pairs Page Page Cisco IOS/PIX Dictionary of RADIUS VSAs Page About the cisco-av-pair RADUIS Attribute Page Cisco VPN 3000 Concentrator Dictionary of RADIUS VSAs Page Page Page Cisco VPN 5000 Concentrator Dictionary of RADIUS VSAs Cisco Building Broadband Service Manager Dictionary of RADIUS VSA IETF Dictionary of RADIUS AV Pairs Page Page Page Page Page Page Page Page Page Page Page Page Page Microsoft MPPE Dictionary of RADIUS VSAs Page Page Ascend Dictionary of RADIUS AV Pairs Page Page Page Page Page Page Page Page Page Page Page Nortel Dictionary of RADIUS VSAs Juniper Dictionary of RADIUS VSAs D CSUtil Database Utility Location of CSUtil.exe and Related Files CSUtil.exe Syntax CSUtil.exe Options Page Displaying Command-Line Syntax Backing Up Cisco Secure ACS with CSUtil.exe Restoring Cisco Secure ACS with CSUtil.exe Creating a CiscoSecure User Database Page Creating a Cisco Secure ACS Database Dump File Loading the Cisco Secure ACS Database from a Dump File Compacting the CiscoSecure User Database Page User and AAA Client Import Option Importing User and AAA Client Information User and AAA Client Import File Format About User and AAA Client Import File Format ONLINE or OFFLINE Statement ADD Statements UPDATE Statements Page DELETE Statements ADD_NAS Statements Page DEL_NAS Statements Import File Example Exporting User List to a Text File Exporting Group Information to a Text File Exporting Registry Information to a Text File Decoding Error Numbers Recalculating CRC Values User-Defined RADIUS Vendors and VSA Sets About User-Defined RADIUS Vendors and VSA Sets Adding a Custom RADIUS Vendor and VSA Set Page Deleting a Custom RADIUS Vendor and VSA Set Listing Custom RADIUS Vendors Exporting Custom RADIUS Vendor and VSA Sets RADIUS Vendor/VSA Import File About the RADIUS Vendor/VSA Import File Vendor and VSA Set Definition Attribute Definition Page Enumeration Definition Example RADIUS Vendor/VSA Import File D-40 PAC File Generation PAC File Options and Examples, page D-41 Generating PAC Files, page D-43 PAC File Options and Examples Page Generating PAC Files Posture Validation Attributes Posture Validation Attribute Definition File Page Page Page Exporting Posture Validation Attribute Definitions Importing Posture Validation Attribute Definitions Page Deleting a Posture Validation Attribute Definition Default Posture Validation Attribute Definition File D-53 D-54 D-55 D-56 D-57 D-58 D-59 D-60 D-61 D-62 D-63 Page E VPDN Processing VPDN Process Page Page Page Page E-6 Figure E-9 HG Uses ACS to Authenticate User Figure E-10 Another User Dials In While Tunnel is Up 9. If another user (sue@corporation.us) dials in to the NAS while the tunnel is F RDBMS Synchronization Import Definitions accountActions Specification accountActions Format accountActions Mandatory Fields accountActions Processing Order Action Codes Action Codes for Setting and Deleting Values Page Action Codes for Creating and Modifying User Accounts Page Page Page Page Page Page Action Codes for Initializing and Modifying Access Filters Page Page Page Page Action Codes for Modifying TACACS+ and RADIUS Group and User Settings Page Page Page Page Page Action Codes for Modifying Network Configuration Page Page Page Page Page Page Cisco Secure ACS Attributes and Action Codes User-Specific Attributes Page User-Defined Attributes Group-Specific Attributes An Example of accountActions Page Page G Internal Architecture Windows Services Windows Registry CSAdmin CSAuth CSDBSync CSLog CSMon Monitoring Recording Notification Response CSTacacs and CSRadius INDEX A Page B C Page D Page E F G H I L Page M N Page O P Page Q R Page Page Page S T Page U V W

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