Firewall might refer to:

  • Firewall (construction), a barrier inside a building or vehicle, designed to limit the spread of fire, heat and structural collapse
  • Firewall (engine), the part of a vehicle that separates the engine compartment from the rest of the vehicle
  • Firewall (computing), a technological barrier designed to prevent unauthorised or unwanted communications between computer networks or hosts
  • Firewall (physics), a hypothetical phenomenon where a freely falling observer spontaneously burns up at the horizon of a black hole

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People

  • The Alberta Agenda, additionally known as the Alberta Firewall, a political proposal for the Canadian province
  • Anonymous web browsing, browsing the World Wide Web while hiding the user's IP address and any additional personally identifiable information from the websites that one is visiting
  • Great Firewall, China's internet censorship firewall
  • Chinese wall, a zone of non-communication between distinct sections of a business, in order to prevent conflicts of interest
  • Personal firewall, a quite popular form of firewall designed to protect personal computers
  • Wall of Fire (disambiguation)