Authentication and authorization are essential for protecting enterprise networks from unauthorized access. Cisco Identity Services Engine helps administrators verify identities and apply policies based on users, devices, and network requirements. A Cisco ISE course from PyNet Labs explores authentication protocols such as RADIUS and TACACS+, along with 802.1X, access policies, and identity-source integration. Learners can also study endpoint profiling and troubleshooting methods for common connectivity and authentication problems. Understanding these concepts can help network engineers improve their technical knowledge of enterprise access management. Visit the course page for further details about the syllabus, instructor-led sessions, and practical labs.