Internet Services, Modems & Routers, Tech Reviews, Computer Networking, Security, and more!
Afroz Ahmad – Main Author of AfrozAhmad.com
Welcome to Afroz Ahmad – I’ve been writing about computer network technologies on my blog since 2012. My name is Afroz Ahmad, and I am a seasoned Network Engineer and author of AfrozAhmad.com.
I’m a CCIE with more than 20 years of experience in Computer Networking, Data Centers, Telecom, Internet Services, Cloud and ISPs. Currently, I work as a Network Designer for a leading ISP equipment vendor. I share my expertise through my blog and courses, aiming to help people solve everyday internet issues, select the appropriate equipment for their tech needs, and simplify complex networking concepts for both beginners and experienced professionals.
Reach out to me with any questions you have on Computer Networking, Modems, Routers, Internet services, etc.
Free networking and internet tools
Eight free tools I use myself: no signup, no account, and nothing you type leaves your device. Every one runs in your browser.
Wi-Fi Channel Overlap Visualiser
Find the clearest 2.4, 5 or 6 GHz channel for your building.
Open the tool
How to Use Night Light in Windows 11 & 10 to Reduce Blue Light & Sleep Better
What if I say that there is one simple windows10 feature to turn off blue light, which is turned off by default and can help you sleep better, especially if you work at night on your laptop.
Installing BackTrack 5 R3 inside Vmware Workstation
In this tutorial i will show you how to install…
Cisco Nexus VRF and OSPF Lab Configuration
Originally, this exercise was performed on the Cisco Nexus 7000…
Configure ACLs using Atomic Programming in Cisco Nexus 7000
This lab has been completed on Nexus 7010 with the…
(Legacy Guide) ASA 8.4 Site-to-Site VPN Tunnel using IKEv1
This is a step-by-step guide for configuring a site-to-site VPN…
Configuring User Accounts and RBAC on Cisco Nexus Switches (NX-OS Guide)
In this article, we will discuss Nexus 7K user accounts and RBACs
GLBP Details, Configs and Load Balancing Tests
Gateway Load Balancing Protocol (GLBP) is a Cisco proprietary protocol that attempts to overcome the limitations of existing redundant router protocols by adding basic load balancing functionality. Watch the short video and take a quiz to get a quick understanding of GLBP.
How to Copy Large “show tech-support” Output from a Cisco Device Using PuTTY
How to copy a large “Show Tech-support” output from a Cisco device using Putty. This is useful in case you are unable to copy the entire content of the output in one go.
Bridging LAN Over WAN
⚠️ Legacy Technology Notice: This article covers legacy Cisco transparent…
EIGRP Neighbor: AS Number Unknown Explained
In the dynamic world of network engineering, troubleshooting is a…
Cisco PfR/OER: Modern SD-WAN and Automation
Today, we revisit a foundational Cisco feature: Optimized Edge Routing…
MSDP with BGP Address-family Ipv4 Multicast
Today we delve into the foundational architecture of MSDP with…
STP Root Guard: Automation & Best Practices
We'll discuss STP Root Guard, which prevents Layer 2 loops in network anomalies.
Cisco 3560/3550 EOL Console Recovery Procedure
While much of the networking world has shifted towards automation…
Cisco Configure Replace: Modern Use & Best Practices
As a network engineer, I’ve broken configs enough times to…
eBGP Peering: Intent-Based Path Selection
The backbone of inter-Autonomous System (AS) communication on the internet…
Cisco IOS Dot1x Authentication Configuration
Ah, 802.1X authentication – a true veteran in network security,…
QinQ Tunneling: Modern Deployments and Automation Practices
A modern, multi‑vendor look at QinQ (802.1ad): correct TPIDs, MTU…
Foundational MPLS Terminologies
As a senior network engineer, I’ve witnessed firsthand the dramatic…
MPLS VPN Scenario: OSPF Loopback /32 Routes
OSPF /32 Issue in MPLS VPN Scenario: A Modern Troubleshooting…