John tackles how the internet works - the most requested topic as voted by Pragmatic listeners in this, the penultimate episode of the show.With Vic Hudson and John Chidgey.Stickers Direct Links: Pragmatic Sticker: Small Pragmatic Sticker: Large TechDistortion Sticker: Small TechDistortion Sticker: Large Previous Related Episodes: Pragmatic Episode 16: One Mans Hopes And Dreams Of An RF Bubble Pragmatic Episode 27: Military Software Pragmatic Episode 55: Cautiously Concerned Historical Overviews: History of the Internet A Brief History of the Internet Token Rings: Token Rings How Token Ring Works OSI and TCP/IP Stacks: TCP/IP Protocol Fundamentals OSI model The Physical Layer: Ethernet Physical Layer Ethernet Over Twisted Pair Exponential Backoff Twisted Pair Addressing: MAC address What are MAC addresses and how are they used? Guidelines for Use Organizationally Unique Identifier and Company ID IEEE Registration Authority IPv6: An Unreachable Wall? How ARP Works Subnetwork Intranets and Firewalls: Dynamic Host Configuration Protocol Private Network Address Allocation for Private Internets Private network Network Address Translation I Have a Router, Do I Need a Firewall? About the OS X Application Firewall Firewalls Backbones and ISP Backhaul Costs: