Welcome This blog is my technical notebook for documenting my work in Network Engineering, Information Systems, and IT Security. Why This Blog? Most technical knowledge fades when it’s only consu...

The PEAP authentication method discussed previously relies on Machine Access Restriction (MAR) in Cisco ISE to associate machine and user authentication. Although this approach allows a domain-join...

Central Web Authentication (CWA) provides a way to authenticate network users through a web portal before granting normal network access. In this lab, Cisco ISE is used to control the authenticatio...

As the previous PEAP & MSCHAPv2 — Machine and User AAA lab article concluded, username and password authentication is not the most secure way to authenticate users or machines, especially given...

Network access does not depend solely on whether a user is sitting behind a keyboard. A domain-joined endpoint may need network connectivity to locate domain controllers, apply Group Policy, and pe...

Introduction High availability at the server access layer is a common enterprise requirement. This lab demonstrates how Cisco Nexus vPC and Windows Server NIC Teaming using LACP can provide active...

ICMP and the ICMPipe experiment The Internet Control Message Protocol (ICMP) is best known for powering the ping command. It was designed for diagnostics and error reporting, not for general-purpo...