#networking
125 episodes · Page 2 of 6
#3999: The VLAN Blind Spot: Why Your IoT Devices Still Talk to Each Other
VLANs isolate IoT from your main network, but devices inside can still attack each other. Client isolation is the missing piece.
#3983: How to Pick the Right Fish Tape for Ethernet
Nylon vs. steel, flat vs. round, and how to avoid killing your Cat6A signal integrity.
#3907: Why the DNS Postman Metaphor Fails Learners
The postal metaphor for DNS is everywhere—but it's failing millions of learners. Here's what works better.
#3904: Manual NAT vs Double NAT: The Measurable Reality
Tracing OPNsense packet paths and quantifying double NAT's real latency cost.
#3902: Manual Network Config Demystified
Why your Linux box asks for gateway, subnet mask, and IP separately — and what each actually does.
#3901: Traceroute Beyond the Basics: Path Diagnostics
Discover what traceroute actually reveals about network paths, firewalls, and multi-WAN failover.
#3884: Why Your Wi-Fi 7 Mesh Might Make Things Worse
Most people either under-provision or over-provision their home networks. Wi-Fi 7 makes both mistakes more expensive.
#3883: Inside OPNsense Tunables: Kernel Variables Explained
What OPNsense tunables actually do, how they work under the hood, and when to touch them.
#3882: Fiber vs Ethernet from Your ONT
What to run from your ONT — Ethernet, fiber, or both? A practical breakdown of the two topologies.
#3808: Tracing a Packet: 3 Home Switches vs the Internet Backbone
Three home switches add 36 microseconds. Your cable modem adds 5-15 milliseconds. Let's follow a packet from phone to Google News.
#3802: What's Really in That Private Network Cable?
Virtual cables, MPLS circuits, and dark fiber — how cloud providers connect data centers behind the scenes.
#3797: How Self-Reverting Watchdogs Save Broken SSH Sessions
A dead man's switch for server configs that automatically rolls back risky changes when connectivity drops.
#3786: When Your DNS Dies: Home Network Failure Cascade
One dead server, ZFS corruption, and a DNS collapse that takes down everything—including your ability to fix it.
#3785: Standalone GPON ONTs: Your Fiber Upgrade Guide
Fiber-to-fiber SFP sticks vs traditional ONT bridges — what works, what doesn't, and why your ISP might block you.
#3738: How to Run Ethernet Through Walls (Without Tearing Everything Open)
Conduits, fish tape, and the difference between DIY and calling a pro — a practical guide to running cable through walls.
#3554: VLAN Tagging on ISP Fiber: Why Your Router Won't Connect
Why you need a VLAN tag for your ISP connection — and how authentication fails when you bring your own router.
#3544: What 4U Actually Means: Rack Gear for Home Labs
Rack height units, case costs, and cabinet types explained for home users and small businesses.
#3535: Fiber vs Copper: Wiring Your Home Network Right
Fiber backbone or copper Ethernet? How to wire a modern home network from the ONT to every room.
#3512: How to Get a Pure Fiber Modem in Israel
Stop compromising with bridge mode. Here's how to get a true standalone ONT from Israeli ISPs.
#3334: Can a City Physically Run Out of Internet?
The internet can't run out like water — but your neighborhood can. Here's the physics and economics behind throttling.
#3228: Bulk Ethernet by the Reel: Where to Buy, What Size, Is It Worth It?
Where to buy bulk Ethernet cable by the reel, what spool sizes exist, and whether crimping your own beats pre-made cables.
#3227: Reading the Blink Codes on Your Network Switch
Your switch LEDs tell you exactly what's wrong — if you know how to read them. Here's the diagnostic language of blinking lights.
#3222: How Petabytes Move at Light Speed
From 40 gig to 3.2 terabit—the hidden infrastructure moving science data at unimaginable speeds.
#2916: Why Your MTU Setting Is Probably Wrong
That 1492 MTU everyone recommends? It's likely costing you performance on modern fiber.