we want to make sure that the correct ports on a firewall are open or closed.The document should you check is configurations distribution.
What is firewall?
- A firewall is a network security device used in computing that monitors and regulates incoming and outgoing network traffic in accordance with pre-established security rules. Typically, a firewall creates a wall between a trustworthy network and an unreliable network, like the Internet.
- The wall used to contain a fire inside a row of nearby buildings was the original meaning of the term firewall.
- Later uses refer to comparable constructions, as the metal panel separating the passenger compartment from the engine compartment of a car or an aeroplane. When network technology first appeared in the late 1980s, the Internet was still relatively young in terms of its widespread use and connectivity. In the late 1980s, routers were utilised as network security alternatives to firewalls.
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