Introduction Troubleshooting Cisco ISE is often considered the highest skill level for network engineers—equivalent to TAC (Technical Assistance Center) operations. Unlike simple GUI checks, TAC-level troubleshooting involves real-time session analysis, debug commands, packet capture, log correlation, and policy validation. Why it matters: In this Article, […]
Introduction Firewall Dynamic ACLs (often called downloadable ACLs or dACLs) let Cisco ISE return per-session, per-user, or per-device access rules to enforcement points (firewalls, routers, switches, VPN gateways) at the moment the session is authorized. Instead of static, coarse ACLs tied to VLANs or host-based […]
Introduction Industrial switches (Cisco IE, Hirschmann, Moxa, Aruba Industrial, etc.) connect PLCs, HMIs, cameras, sensors and other OT gear. These devices rarely support modern endpoint management or 802.1X, are often safety-critical, and require non-disruptive security controls. Cisco ISE becomes the control plane: it identifies OT […]
Introduction Profiling = the “how do we know what’s on the wire” function of ISE. Out of the box, ISE can identify many clients from DHCP, RADIUS, HTTP headers, SNMP, NetFlow, DNS, and other probes. But real networks contain new IoT devices, industrial gear, and […]
Introduction Multi-factor authentication (MFA) is now table stakes: passwords alone are not sufficient. Cisco ISE sits at the center of network access control — it’s the ideal enforcement point to require a second factor before granting access to sensitive networks or services. Integrating an MFA […]
Introduction Imagine a visitor at Reception: instead of the receptionist reading out credentials, the visitor enters their mobile number and instantly receives a one-time code on their phone — quick, frictionless, and auditable. SMS OTP is the simplest multi-factor flow for guest access: low barrier […]
Introduction Mixed-vendor networks are the reality: Cisco campus switches, Aruba aggregation, Juniper edge, and multi-vendor controllers often coexist. Cisco ISE is commonly used as the central RADIUS/Policy engine — but different vendors implement RADIUS dynamic features (CoA/Disconnect/VSA) and 802.1X behavior with vendor-specific quirks. This masterclass […]
![Mastering SPAN and RSPAN Configuration – A Deep Dive for Real-World Network Monitoring [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/Mastering-SPAN-and-RSPAN-Configuration-–-A-Deep-Dive-for-Real-World-Network-Monitoring_networkjourney.png)
When it comes to network troubleshooting and traffic analysis, capturing the right packets at the right place makes all the difference. How SPAN and RSPAN work behind the scenes—this post is tailor-made for you. Today, we’ll simplify a topic that often looks intimidating in textbooks […]
