Wednesday, 6 August 2014

Database Protection | firewalls


  • The term firewall originally referred to a wall intended to confine a fire or potential fire within a building. Later uses refer to similar structures, such as the metal sheet separating the engine compartment of a vehicle or aircraft from the passenger compartment.
  • In computing, a firewall is a software or hardware-based network security system that controls the incoming and outgoing network traffic based on applied rule set. 
  • A firewall establishes a barrier between a trusted, secure internal network and another network (e.g., the Internet) that is not assumed to be secure and trusted.
  • Many personal computer operating systems include software-based firewalls to protect against threats from the public Internet.
  •  Many routers that pass data between networks contain firewall components and, conversely, many firewalls can perform basic routing functions.


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