A firewall network is a network security device that allows or denies network access to traffic flows between unreliable zones (like the Internet) and trusted zones like private or corporate networks.

firewall network

 

A firewall network acts as the “traffic police” or demarcation point in the network. All communication flow through firewall network and therefore it is its role to decide on whether to grant or reject network access to traffic that flows between an untrustworthy zone and a trusted zone for instance corporate or a private networks. Firewall network implements access controls via a positive control model that insists that only traffic defined in the firewall is accessed.

A great challenge is to identify security risks systematically and proactively in …

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