![[Day 16] Cisco ISE Mastery Training: Understanding 802.1X Authentication Flow](https://networkjourney.com/wp-content/uploads/2025/08/Day-16-–-Cisco-ISE-Mastery-Training-Understanding-802.1X-Authentication-Flow.png)
Introduction 802.1X is the foundation of secure wired and wireless network access control in enterprise networks.With Cisco ISE, 802.1X authentication ensures that only authorized devices and users can connect to the corporate network — reducing the risk of data breaches and preventing rogue devices from […]
![[Day 14] Cisco ISE Mastery Training: Setting Up a Test Switch for Authentication](https://networkjourney.com/wp-content/uploads/2025/08/Day-14-Cisco-ISE-Mastery-Training-Setting-Up-a-Test-Switch-for-Authentication.png)
Introduction In Cisco ISE deployments, a Test Switch is your lab’s workhorse. Before rolling NAC (802.1X/MAB) into production, you need a safe environment to test authentication policies, VLAN assignments, and posture checks.This session walks you through configuring a switch from scratch to talk to ISE, […]
Introduction In large networks, managing administrative access to switches, routers, and wireless controllers requires strong authentication, granular authorization, and complete activity logging. This is where Cisco ISE Device Administration via TACACS+ shines — it centralizes control, ensures compliance, and gives security teams full visibility into […]
Introduction TACACS+ (Terminal Access Controller Access Control System Plus) is the go-to protocol for device administration control in enterprise networks. Unlike RADIUS, which is primarily for network access (wired/wireless), TACACS+ is designed for controlling administrative access to routers, switches, firewalls, and other network gear. In […]
![AAA Authentication with TACACS+ and RADIUS – Step-by-Step Cisco Guide [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-AAA-TACACS-RADIUS.jpg)
Let me take you back to my early network engineering days. We had 10 routers and 20 engineers—and we used the same username and password across all devices. No logs. No traceability. Just convenience… until one fine day, someone made a change that brought the […]
