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A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

Major vendor providing firewall solutions includes

Gartner MQ reports:

Related Topics: Software solution vs Hardware Solutions, Stateful vs stateless inspection, ACLs, Firewall placement: Internal, External

Threats protection[edit]


In 2016 security researchers found a SSH backdoor in FortiOS.[1]

Related terms[edit]

See also[edit]