Author

Bhardwaj Vishnu

Bhardwaj Vishnu is a Network Security Engineer with hands-on expertise in enterprise firewall management, network automation, and multi-vendor infrastructure. He holds Fortinet NSE 4/NSE 5, a Cisco CCNA, and the full Cisco Meraki certification track. He architects FortiGate security policies, manages Cisco Meraki MX/MS/MR deployments, and handles enterprise routing and switching. Every guide on netconfig.io comes from direct production experience — real CLI commands, verified configs.

17 Articles

Learn Cisco Meraki API:Create & Clone Networks via API

By Bhardwaj Vishnu

8 Min Read

Introduction Rolling out a single branch office manually via a graphical interface is a manageable task. However, when tasked with deploying fifty, a hundred, or a thousand new sites, relying on manual configuration is a recipe for operational…

Meraki API Tutorial: How to Get Your Organization ID and Network ID

By Bhardwaj Vishnu

4 Min Read

When transitioning from configuring Cisco Meraki networks manually via the GUI dashboard to automating network deployments with the Meraki API, the very first hurdle is gathering your foundational identifiers. Before you can clone a site, update firewall…

Complete Guide: FortiGate DHCP over IPsec VPN in FortiClient

By Bhardwaj Vishnu

7 Min Read

Introduction to FortiGate DHCP over IPsec VPN When enterprise network engineers deploy FortiGate Remote Access VPNs (Dial-Up IPsec), the default and most heavily documented method for assigning IP addresses to remote clients is Mode Config. Mode Config…

FortiGate IPsec Remote Access VPN Setup Guide | FortiOS 7.x

By Bhardwaj Vishnu

7 Min Read

FortiGate IPsec Remote Access VPN in modern enterprise network environments, providing secure, encrypted access for dynamic remote workforces is a foundational architecture requirement. Unlike site-to-site tunnels, a remote access (dial-up) topology…

Python NETCONF Automation with NCclient: Cisco IOS-XE Guide

By Bhardwaj Vishnu

17 Min Read

INTRODUCTION If you have spent any time writing network automation scripts using Python libraries like Paramiko or Netmiko, you are intimately familiar with the primary pain point of legacy automation: CLI screen scraping. Parsing text-based CLI outputs…

FortiGate Web Filtering Deep Dive: Architecture & Core Engines-Part 1

By Bhardwaj Vishnu

6 Min Read

FortiGate Web Filtering is an enterprise-grade security profile within FortiOS that inspects, controls, and restricts web access based on FortiGuard category ratings and static URL definitions. Operating at the network edge, it intercepts HTTP/HTTPS…

FortiASIC Architecture Deep Dive: NP7, CP9, and SP5 Explained

By Bhardwaj Vishnu

27 Min Read

Fortinet FortiASIC architecture utilizes proprietary, hardware-accelerated Application-Specific Integrated Circuits (ASICs) rather than relying solely on general-purpose CPUs.