Network Security Engineer
Karan
Belani.
Building and breaking networks.
Writing about both.
About
Network Engineer.
Lifelong learner.
I'm Karan, a Network Engineer focused on building, securing, and troubleshooting real-world networks. I work with technologies like routing, switching, VPNs, and network security across enterprise environments. This blog is where I share hands-on labs, configurations, and practical insights from my daily work — no theory overload, just real networking.
2.5+
Years experience
2
Certifications
3
Articles published
∞
Lab hours
Find me online
Credentials
Certifications.
Writing
Notes from
the Network.
CCNP SISE
Configuring MAC Authentication Bypass (MAB) in Cisco ISE: A Simple Guide
After going through several resources on configuring MAC Authentication Bypass (MAB) with Cisco ISE, I found that it's quite simple. Most of the configuration is done on the switch, with only minimal setup required on ISE for policies and identity management.
CCNP SVPNDMVPN Phase1 with RIA and failover to DIA
This lab explores how to build a highly resilient enterprise DMVPN architecture. It walks through centralizing internet traffic for security control, while using EIGRP and floating static routes to trigger an automatic failover to local internet if the primary hub goes down.
CCNP SISEDevice Administration using TACACS+ with Active Directory and Cisco ISE
This guide demonstrates how to integrate Cisco IOS device administration with Cisco Identity Services Engine and Active Directory to achieve centralized authentication, authorization, and role-based access control for network devices, improving security, management, and administrative efficiency across the network.
Contact
Say hello.
Have a question, want to collaborate, or just want to talk networking? I'm always happy to connect with other engineers, hiring managers, or anyone curious about the field.
Typical response time: 2–3 business days.
Also at