Cisco TrustSec User Manual

iii
Cisco TrustSec Configuration Guide
OL-22192-01
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

Cisco TrustSec Specifications

General

Category	Network Security
Functionality	Provides role-based access control, network segmentation, and policy enforcement.
Key Components	Security Group Tags (SGT), Security Exchange Protocol (SXP).
Authentication Methods	802.1X, MAC Authentication Bypass (MAB), Web Authentication
Security Group Tagging (SGT)	Assigns security group tags to users and devices for identity-based segmentation.
Security Exchange Protocol (SXP)	A protocol used to propagate SGT information across network devices.
Policy Enforcement	Enforces security policies based on SGTs and SGACLs.
Benefits	Enhanced security, simplified policy management, and improved compliance.
Encryption	Supports encryption for data in transit through IPsec and MACsec.
Scalability	Scalable to large enterprise networks with thousands of devices.
Compatibility	Compatible with a wide range of Cisco network devices.
Description	Cisco TrustSec is a security architecture framework designed to build secure networks. It uses identity-based access control to segment the network and enforce policies based on user roles and device types, rather than relying solely on IP addresses.