NAT and PAT power almost every home and enterprise network. In this video I show you, step by step, how private RFC1918 addresses are translated to public addresses, why IPv4...
Learn how to protect your Ethernet network from unauthorized access by configuring port security on a Cisco switch! In this free CCNA course segment, we cover: • Why Ethernet ports...
Confused about the difference between gigabits per second (Gbps) and gigabytes per second (GBps)? In this quick breakdown, we explain how network speeds are measured, why the conversion matters (hint:...
Are 100 Gigabit Ethernet transceivers really that expensive? In this video, I answer a popular question from my last build—how much do QSFP modules cost for high-speed fiber setups? I...
Big thank you to Cisco for sponsoring this video and sponsoring my trip to Cisco Live San Diego. Can AI really help network engineers in 2025? Hank Preston joins David...
Ever wonder which OS defaults to IPv6 when pinging Google? I tested Windows 11, Kali Linux, Ubuntu, and macOS, and the results may surprise you. Learn the subtle networking differences...
Is TCP/IP really essential for networking? Join David Bombal as he resurrects forgotten protocols from the pre-IP era (like NetBEUI and IPX/SPX) to create a working Windows 95/98/11 network with...
You Can Learn Networking FOR FREE 🤯 You don’t need to spend a dime to learn real networking skills. David Bombal shows you how to get started with practical CCNA...
They Said IPerf3 Was Bad… So I Tested It Lots of people claimed IPerf2 would crush IPerf3 in a 100Gbps test, so I ran them head to head. The results...
Why We Skipped IPv5 🧐 Why there's no IPv5. It was already used by the Internet Stream Protocol, which wasn't meant to replace IPv4. So we went straight to IPv6...
