firewalls - meaning and definition. What is firewalls
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What (who) is firewalls - definition

WIKIMEDIA DISAMBIGUATION PAGE
Firewall (book); Physical firewall; Firewall (novel); Firewall (disambiguation); Firewalls; Fire wall; Firewalled

firewall         
firewall         
A firewall is a computer system or program that automatically prevents an unauthorized person from gaining access to a computer when it is connected to a network such as the Internet. (COMPUTING)
New technology should provide a secure firewall against hackers.
N-COUNT
firewall         
¦ noun
1. a wall or partition designed to inhibit or prevent the spread of fire.
2. a part of a computer system or network which is designed to block unauthorized access while permitting outward communication.
¦ verb Computing protect (a network or system) from unauthorized access with a firewall.

Wikipedia

Firewall

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
Examples of use of firewalls
1. Some web sites face government imposed firewalls.
2. It offered several applicative firewalls for different environments, including InterDo and Scando for Internet.
3. Nortel has donated a lab that includes routers, switches, security firewalls.
4. Firewalls had been built in to prevent misuse of personal data, he said.
5. Mr Gilbertson was also employed to establish firewalls that would safeguard both places from outside interference.