Introduction to firewalls
Firewalls. The pocketknife for enforcing computer security
Article REF: TE7550 V2
Introduction to firewalls
Firewalls. The pocketknife for enforcing computer security

Author : Maryline LAURENT

Publication date: October 10, 2017, Review date: January 3, 2024 | Lire en français

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1. Introduction to firewalls

A firewall (firewall, security gateway ) is a set of components placed between two networks with the following properties (properties largely extracted from ):

  • all traffic between the two networks must pass through the firewall ;

  • only traffic explicitly authorized by the locally applied security policy is allowed to pass through the firewall ;

  • ...

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