Fabio Semperboni

802.1X Deployment Guide: Global configuration

In the previous article, I illustrated what are the dot1x and the benefits related to it. Just to remember that 802.1X authentication involves three...

An overview to Cisco ISE-PIC

The Cisco ISE Passive Identity Connector aka Cisco ISE-PIC is a software designed to gather authentication data (user-ip mapping) from numerous sources (active directory,...

How to configure PassiveID in Cisco ISE

Starting from ISE 2.2, PassiveID is a feature to gather user-to-IP mapping information with or without having 802.1X deployed. PassiveID gathers information from the Microsoft...

802.1x: Introduction and general principles

IEEE 802.1X is an IEEE Standard for port-based Network Access Control to prevent unauthorized devices from gaining access to the network. It defines the...

How to set up raid on Cisco ISE appliance

Recently, I have installed an ISE 2.6 cluster based by two SNS3615 appliances. After some months, the customer asked me to redundant each hard...

BGP route leak sends European traffic via China

On Thursday June 6, 2019, traffic destined to some of Europe's biggest mobile providers was misdirected in a roundabout path through the Chinese-government-controlled China...

StackWise Virtual on Catalyst 9500

During the Cisco Live 2016 in Las Vegas, Cisco presented the new feature named "StackWise virtual" supported by the IOS XE Denali in the...

Critical SSH flaw affects Nexus 9000

The first of May, Cisco has revealed that its Nexus 9000 fabric switches have a critical flaw that could allow anyone to remotely connect...

Troubleshoot a DMVPN phase 3 architecture

In the last article, I explained how to configure DMVPN phase3, but what are the most useful commands to troubleshoot this type of network...

DMVPN Phase 3: a complete guide

In a previous article, I explained what isĀ and how it works DMVPN technology. In this article you see how to configure DMVPN phase3. This...