Cisco TrustSec Manuale utente

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Cisco TrustSec Switch Configuration

Guide

For Cisco Catalyst Switches

Updated: October 2013

Text Part Number: OL-22192-02

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CONTENTS

Preface ix

Cisco TrustSec Overview 1-1

Information about Cisco TrustSec Architecture 1-1

Authentication 1-3

Cisco TrustSec and Authentication 1-3

Device Identities 1-6

Device Credentials 1-6

User Credentials 1-6

Security Group-Based Access Control 1-7

Security Groups and SGTs 1-7

SGACL Policies 1-7

Ingress Tagging and Egress Enforcement 1-8

Determining the Source Security Group 1-9

Determining the Destination Security Group 1-10

SGACL Enforcement on Routed and Switched Traffic 1-10

Authorization and Policy Acquisition 1-10

Environment Data Download 1-11

RADIUS Relay Functionality 1-12

Link Security 1-12

Using Cisco TrustSec-Incapable Devices and Networks in a Cisco TrustSec Network 1-13

SXP for SGT Propagation Across Legacy Access Networks 1-13

Layer 3 SGT Transport for Spanning Non-TrustSec Regions 1-14

Cisco TrustSec Reflector for Cisco TrustSec-Incapable Switching Modules 1-15

Ingress Reflector 1-16

Egress Reflector 1-16

VRF-Aware SXP 1-17

Layer 2 VRF-Aware SXP and VRF Assignment 1-17

Contents

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Configuring the Cisco TrustSec Solution 2-1

Configuration Overview 2-1

Cisco TrustSec Configuration How-to Documents 2-1

Supported Hardware and Software 2-2

Prerequisites for Cisco TrustSec 2-2

Cisco TrustSec Guidelines and Limitations 2-3

Default Settings 2-3

Additional Documentation 2-3

Release-Specific Documents 2-3

Platform-Specific Documents 2-4

Cisco IOS TrustSec Documentation Set 2-5

Configuring Identities, Connections, and SGTs 3-1

Cisco TrustSec Identity Configuration Feature Histories 3-1

Configuring Credentials and AAA for a Cisco TrustSec Seed Device 3-2

Configuration Examples for Seed Device 3-3

Configuring Credentials and AAA for a Cisco TrustSec Non-Seed Device 3-3

Configuration Examples for Non-Seed Device 3-4

Enabling Cisco TrustSec Authentication and MACsec in 802.1X Mode on an Uplink Port 3-5

Configuration Examples for 802.1X on Uplink Port 3-6

Configuring Cisco TrustSec and MACsec in Manual Mode on an Uplink Port 3-6

Configuration Examples for Manual Mode and MACsec on an Uplink Port 3-8

Regenerating SAP Key on an Interface 3-9

Verifying the Cisco TrustSec Interface Configuration 3-9

Manually Configuring a Device SGT 3-11

Configuration Examples for Manually Configuring a Device SGT 3-11

Manually Configuring IP-Address-to-SGT Mapping 3-12

Subnet to SGT Mapping 3-12

Default Settings 3-12

Configuring Subnet to SGT Mapping 3-12

Verifying Subnet to SGT Mapping Configuration 3-15

Configuration Examples for Subnet to SGT Mapping 3-15

VLAN to SGT Mapping 3-16

Default Settings 3-17

Configuring VLAN to SGT Mapping 3-17

Verifying VLAN to SGT Mapping 3-19

Configuration Example for VLAN to SGT Mapping for a Single Host Over an Access Link 3-19

Contents

Cisco TrustSec Configuration Guide

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Layer 3 Logical Interface to SGT Mapping (L3IF–SGT Mapping) 3-20

Feature History for L3IF-SGT Mapping 3-21

Default Settings 3-21

Configuring L3IF to SGT Mapping 3-21

Verifying L3IF to SGT Mapping 3-21

Configuration Example for L3IF to SGT Mapping on an Ingress Port 3-22

Binding Source Priorities 3-22

Configuring Additional Authentication Server-Related Parameters 3-23

Automatically Configuring a New or Replacement Password with the Authentication Server 3-24

Configuring SGT Exchange Protocol over TCP (SXP) and Layer 3 Transport 4-1

Cisco TrustSec SGT Exchange Protocol Feature Histories 4-1

Configuring Cisco TrustSec SXP 4-2

Enabling Cisco TrustSec SXP 4-2

Configuring an SXP Peer Connection 4-2

Configuring the Default SXP Password 4-4

Configuring the Default SXP Source IP Address 4-4

Changing the SXP Reconciliation Period 4-5

Changing the SXP Retry Period 4-5

Creating Syslogs to Capture Changes of IP Address to SGT Mapping Learned Through SXP 4-5

Verifying the SXP Connections 4-6

Configuring Layer 3 SGT Transport Between Cisco TrustSec Domains 4-6

Configuring Cisco TrustSec Reflector for Cisco TrustSec-Incapable Switching Modules 4-8

Configuring Cisco TrustSec Caching 4-9

Enabling Cisco TrustSec Caching 4-9

Clearing the Cisco TrustSec Cache 4-10

Configuring SGACL Policies 5-1

Cisco TrustSec SGACL Feature Histories 5-1

SGACL Policy Configuration Process 5-2

Enabling SGACL Policy Enforcement Globally 5-2

Configuration Examples for Enabling SGACL Policy Enforcement Globally 5-2

Enabling SGACL Policy Enforcement Per Interface 5-3

Configuration Examples for Enabling SGACL Policy Enforcement Per Interface 5-3

Enabling SGACL Policy Enforcement on VLANs 5-3

Configuration Examples for Enabling SGACL Policy Enforcement on VLANs 5-3

Contents

Cisco TrustSec Configuration Guide

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Manually Configuring SGACL Policies 5-4

Manually Configuring and Applying IPv4 SGACL Policies 5-4

Configuration Examples for Manually Configuring SGACL Policies 5-5

Displaying SGACL Policies 5-6

Refreshing the Downloaded SGACL Policies 5-7

Configuring Endpoint Admission Control 6-1

Information About Endpoint Admission Control 6-1

Basic EAC Configuration Sequence 6-2

802.1X Authentication Configuration 6-2

Verifying the 802.1X Configuration 6-2

MAC Authentication Bypass Configuration 6-3

Verifying the MAB Configuration 6-3

Web Authentication Proxy Configuration 6-4

Verifying Web Authentication Proxy Configuration 6-4

Flexible Authentication Sequence and Failover Configuration 6-5

802.1X Host Modes 6-5

Pre-Authentication Open Access 6-5

DHCP Snooping and SGT Assignment 6-6

Verifying the SGT to Endpoint Host Binding 6-6

Cisco TrustSec Endpoint Access Control Feature Histories 6-7

Cisco TrustSec Command Summary 7-1

Notes for Catalyst 3000 and 2000 Series Switches and WLC 5700 Series Wireless LAN

Controllers A-1

Supported Hardware and Software A-1

Configuration Guidelines and Restrictions A-1

Global Cat3K Restrictions A-1

Catalyst 3850 and Catalyst 3650 Switches, and WLC 5700 Wireless LAN Controllers A-2

Catalyst 3750-X and Catalyst 3560-X switches A-2

Notes for Catalyst 4500 Series Switches B-1

Supported Hardware and Software B-1

TrustSec SGT and SGACL Configuration Guidelines and Limitations B-1

Contents

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Notes for Catalyst 6500 Series Switches C-1

TrustSec Supported Hardware C-1

Flexible NetFlow Support C-1

Sample Configurations C-2

Configuration Excerpt of an IPV4 Flow Record (5-tuple, direction, SGT, DGT) C-2

Configuration Excerpt of an IPV6 Flow Record (5-tuple, direction, SGT, DGT) C-2

Configuration Excerpt of an IPv4 Flow Monitor C-2

Configuration Excerpt of an IPv6 Flow Monitor C-3

Configuration Excerpt of the Global Flow Monitor (IPv4 and IPv6) C-3

Configuration Excerpt of the Interface Monitor C-3

Flexible NetFlow Show Commands C-3

TrustSec System Error Messages C-4

FIPS Support C-4

TrustSec Considerations when Configuring FIPS C-4

Licensing Requirements for FIPS C-4

Prerequisites for FIPS Configuration C-5

Guidelines and Limitations for FIPS C-5

Default Settings for FIPS C-5

NDEX

Contents

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Cisco TrustSec Configuration Guide

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Cisco TrustSec Switch Configuration Guide

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Preface

Revised: October 16, 2013, OL-22192-02

Organization

This guide includes the following chapters and appendixes:

Chapter or Appendix Title Description

Chapter 1, “Cisco TrustSec

Overview”

Describes the elements and processes that create

the Cisco TrustSec network.

Chapter 2, “Configuring the Cisco

TrustSec Solution”

Provides an overview of configuration tasks

required to implement a Cisco TrustSec Network.

Chapter 3, “Configuring Identities,

Connections, and SGTs”

Provides NDAC and TrustSec seed device

configuration procedures.

Chapter 4, “Configuring SGT

Exchange Protocol over TCP (SXP)

and Layer 3 Transport”

Provides SGT over TCP Protocol (SXP)

configuration procedures.

Chapter 5, “Configuring SGACL

Policies”

Provides Security Group ACL configuration

procedures from the switch CLI.

Chapter 6, “Configuring Endpoint

Admission Control”

Provides 802.1X, MAB, and WebAuth

configuration procedures for a TrustSec context.

Chapter 7, “Cisco TrustSec

Command Summary”

Provides a list of Cisco TrustSec CLI commands

with brief descriptions.

Appendix A, “Notes for Catalyst

3000 and 2000 Series Switches and

WLC 5700 Series Wireless LAN

Controllers”

Describes constraints, limitations, or

considerations pertaining to TrustSec

implementation of Catalyst 3000 and 2000 Series

Switches and WLC 5700 Series Wireless LAN

Controllers.

Appendix B, “Notes for Catalyst

4500 Series Switches”

Describes constraints, limitations, or

considerations pertaining to TrustSec

implementation of Catalyst 4500 Series Switches.

Appendix C, “Notes for Catalyst

6500 Series Switches”

Describes constraints, limitations, or

considerations pertaining to TrustSec

implementation of Catalyst 6500 Series Switches.

Cisco TrustSec Switch Configuration Guide

OL-22192-02

Preface

Conventions

This document uses the following conventions:

Note Means reader take note.

Tip Means the following information will help you solve a problem.

Caution Means reader be careful. In this situation, you might perform an action that could result in equipment

damage or loss of data.

Timesaver Means the described action saves time. You can save time by performing the action described in

the paragraph.

Warning

Means reader be warned. In this situation, you might perform an action that could result in

bodily injury.

Convention Indication

bold font Commands and keywords and user-entered text appear in bold font.

italic font Document titles, new or emphasized terms, and arguments for which you supply

values are in italic font.

[ ] Elements in square brackets are optional.

{x | y | z } Required alternative keywords are grouped in braces and separated by

vertical bars.

[ x | y | z ] Optional alternative keywords are grouped in brackets and separated by

vertical bars.

string A nonquoted set of characters. Do not use quotation marks around the string or

the string will include the quotation marks.

courier font Terminal sessions and information the system displays appear in courier font.

< > Nonprinting characters such as passwords are in angle brackets.

[ ] Default responses to system prompts are in square brackets.

!, # An exclamation point (!) or a pound sign (#) at the beginning of a line of code

indicates a comment line.

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