1.

What Are Firewalls?

Answer»

A firewall is any device that prevents a specific TYPE of information from MOVING between the untrusted network outside and the trusted network inside The firewall may be:

  • a SEPARATE computer system
  • a service running on an existing router or server
  • a separate network CONTAINING a number of supporting devices.

A firewall is any device that prevents a specific type of information from moving between the untrusted network outside and the trusted network inside The firewall may be:


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