The technology filters the incoming data and determines by its rules if it is allowed to enter a network. These rules, also known as an access control list, are based on IP addresses, domain names, protocols, programs, ports, and keywords. It either allows or denies permission. The rules are customizable and can be easily determined by a network administrator.

Firewalls can be both host-based and a network-based. The former is a simple software that protects the computer it is installed on, whereas the latter is a combination of soft- and hardware, which protects the whole network. It may come in the form of a stand-alone product or a built-in component of a router.

A lot of organizations use both network-based and host-based firewalls to ensure maximum protection. Thus, host-based firewalls will stop all harmful data that happens to get past through the network firewall.

At Prime Buy, you can find a variety of firewall devices from the most trusted brands to create a reliable defense system against all Internet threats.

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