Internet Protocol - Topics

How the hourglass shape of the IP layer lets new applications arrive without changing routers How IP-based geolocation gets the wrong city for users on mobile networks How middleboxes turned a clean layered design into a negotiated mess How BGP communities steer inbound traffic without asking the neighbor The original argument for a stateless network and where state crept back in Why an IP address is both a name and a location and what that costs mobility and multihoming The architecture omitted a session layer so every application rebuilt one in its own way Why does carrier-grade NAT break port forwarding for game consoles? IP fragmentation lets packets slip past some firewall rule sets IPv6 adoption is slower than the address shortage should have forced A misconfigured subnet mask can take down a whole office network Broadband prices move in step in cities where two providers split the market Filtering ICMP breaks path MTU discovery and creates mysterious black holes Each network layer ends up carrying a killer application its designers never planned for Two hosts on the same LAN can hold the same private IP address without conflict Should the loopback address 127.0.0.1 be used as a security boundary? Allocating IPv6 prefixes to ISPs means almost nobody needs a /64 at home The difference between an IP address and a MAC address trips up new IT staff Regional internet registries and IPv4 exhaustion: waiting lists and the transfer market