what is firewalls? name the first person who started the firewall in computer and in which year?

Question

what is firewalls? name the first person who started the firewall in computer and in which year?

Answer 1

good question and thanks for the information 👍💖

Answer 2

Nir Zuk says he developed the technology used in all firewalls today. David Pensak claims to have built the first commercially successful firewall. Marcus Ranum says his own reputation as inventor of the firewall is "marketing BS," and that David Presotto is the man.
Security expert Rik Ferguson explains how next-generation firewalls were developed and what protection they provide businesses. The humble firewall has come a long way since the packet-filtering days of yore. The first firewalls were developed by the Digital Equipment Corporation (DEC) back in the late 1980s.
Generally the firewall has two network interfaces: one for the external side of the network, one for the internal side. Its purpose is to control what traffic is allowed to traverse from one side to the other. As the most basic level, firewalls can block traffic intended for particular IP addresses or server ports.

Answer 3

Nifty.

This seems rhetorical. If you have a specific question about this that will help you be a better programmer, please ask. Otherwise, this would make an excellent post for your personal feed.