After reviewing the details, the outside network can join the internal network. The term was applied in the late 1980s to network technology.”Īs a security solution for enterprise networks, the firewall checks all the incoming and outgoing addresses before entering the private network. Later uses refer to similar structures, such as the metal sheet separating the engine compartment of a vehicle or aircraft from the passenger compartment. The term firewall originally referred to a wall intended to confine a fire within a line of adjacent buildings. A firewall typically establishes a barrier between a trusted network and an untrusted network, such as the Internet. A physical or hardware firewall allow only authenticated networks to enter the private network.Īccording to Wikipedia, “In computing, a firewall is a network security system that monitors and controls the incoming and outgoing network traffic based on predetermined security rules. A firewall can be hardware, software, or a combination of both and work as the first line of defense against malicious attacks.
It monitors attempts to gain access to your operating system and blocks unwanted incoming traffic and unrecognized sources”.Ī firewall only allows authenticated traffic to enter a private enterprise network. It can help protect your network by acting as an intermediary between your internal network and outside traffic. According to Norton, “A firewall is a security device in the form of computer hardware or software.
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