Cisco TrustSec User Manual

B-2
Cisco TrustSec Configuration Guide
OL-22192-01
Appendix B Notes for Catalyst 4500 Series Switches
TrustSec SGT and SGACL Configuration Guidelines and Limitations
IP-SGT mappings are not VRF-aware.
The TTL configuration is not supported for SGACL.
The TCP flags supported by SGACL is similar to what the other ACLs support.
The maximum number of ACEs supported in the Default/(*,*) SGACL policy is 512.
The IP-SGT mapping (based on the Source IP address in the packet) takes precedence over the SGT tag
present in the CMD header of incoming traffic even if the ingress port is in trusted state. This deviates
from the default behavior, which dictates that if the port is trusted the packet SGT is used for enforcing
the SGACL policy.

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.