PacketbrewWhy the Internet Ran Out of Addresses — And Whats Fixing It
Why the Internet Ran Out of Addresses — And What’s Fixing It A beginner-friendly guide to IPv4, IPv6, and the biggest upgrade in internet history.
Every device connected to the internet — your phone, your laptop, your smart TV — needs a unique address so data knows where to go. Without it, the internet simply doesn’t work. That addressing system is called an IP address, and right now, the internet is in the middle of a massive, decades-long migration from one version to another.
Default Gateway vs Default Route - Whats the Difference
Default Gateway vs Default Route — What’s the Difference? You type packetbrew.com into your browser. Your computer resolves it to an IP address. Now it has to answer one simple question:
Is this destination on my network — or somewhere else?
If the answer is “somewhere else,” two things kick in to get your data where it needs to go: the default gateway on your device, and the default route on your router. They’re closely related, often confused, and together they’re responsible for getting virtually every packet off your network.
Every Network Transmission Type Explained Unicast, Broadcast, Multicast and Anycast
Every Network Transmission Type Explained: Unicast, Broadcast, Multicast & Anycast The world of IP networking is full of terminology, but when it comes to how data actually gets delivered, there are only four fundamental methods: Unicast, Broadcast, Multicast, and Anycast. Understanding the difference between them is essential for anyone working with or studying networks — from home lab enthusiasts to seasoned engineers preparing for certifications.
Essential Network Protocols Every IT Professional Should Know
Essential Network Protocols Every IT Professional Should Know Network protocols are the invisible backbone of the internet. Every time you browse a website, send an email, or join a video call, dozens of protocols are working silently behind the scenes to make it happen. In this post, we’ll break down the most important network protocols — from your basic computer settings all the way to the security protocols that keep your data safe.
HSRP Explained
HSRP Explained: Hot Standby Routing Protocol in 5 Minutes What is HSRP? Every host on a network needs a default gateway — the first hop used to reach other subnets. In a basic setup, that gateway is a single router. If it goes down, every host behind it loses connectivity, even if the rest of the network is healthy.