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5 results for “networking”.

• Undersea Cables: The Physical Internet Under Your Ocean
  Ninety-seven per cent of intercontinental data — every email, transaction and stream crossing an ocean — rides on cables you can walk past on a beach. Here is where they land, how they survive the seabed, and what happens when one breaks.
• Reverse Proxies and the Death of "Real" Client IPs
  Behind a proxy, CDN, or tunnel, `socket.remoteAddress` is the proxy — not the visitor. Everything from rate limits to geo to abuse reports goes wrong until you read the right header, and validate it.
• How Fiber Optics Turned Light Into the Internet
  Almost everything you have ever read online arrived as pulses of laser light bouncing down a strand of glass thinner than a hair. Here is the counterintuitive physics that makes that possible — total internal reflection, doped cores, and the amplifiers that let a signal cross oceans.
• How DNS Works: The Invisible Phone Book That Runs the Internet
  Every click starts with a lookup you never see: a name becomes a number in tens of milliseconds, through a global, cached, hierarchical database nobody centrally controls. Here is the machinery of DNS — roots, TLDs, resolvers, records and TTLs — and its documented weak spots.
• Cloudflare Anycast and What It Means for Global Availability
  Anycast puts your site in hundreds of cities behind one IP — it is the cheapest layer of "many doors" you can buy, and it is not the same thing as being unblockable.