An internet traffic filter meant to stop unauthorized incoming and outgoing traffic.
Firewall (Wikipedia)
| Look up firewall in Wiktionary, the free dictionary. |
Firewall may refer to:
- Firewall (computing), a technological barrier designed to prevent unauthorized or unwanted communications between computer networks or hosts
- Firewall (construction), a barrier inside a building, 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 (physics), a hypothetical phenomenon where a freely falling observer spontaneously burns up at the horizon of a black hole
