You've probably heard all about creating multiple VLANs, for things like your IoT network, guest wifi, and more. But do you know what a VLAN actually is, and what the difference is between a VLAN and a Subnet? Today I'm going to cover the numbering of subnets in your network, and how to set up new subnet and VLAN interfaces in OPNsense. Come along on this adventure! This video is sponsored by Tronsmart, and their T7 portable Bluetooth speaker: Find the diagrams in my blog post: Support me on Ko-Fi if you enjoy my content and find it useful: Feel free to chat about my upcoming projects on Discord! For anyone who's still curious why NAT is bad: Timestamps: 00:00 - Introduction 02:07 - Why Subnet? 07:59 - Subnet Demonstration 11:39 - Scaling Problem 16:22 - VLAN Demonstration 18:44 - Numbering Plan 25:40 - IPv6 Private Addressing (ULA) 30:06 - Future Topics Some links to products may be affiliate links, which may earn a commission for me.