Network security is becoming increasingly important to personal computer users, businesses, and the military. Security became a major concern with the advent of the internet, and understanding the history of security allows a better understanding of the emergence of security technology. Many security threats can occur due to the structure of the internet. If the internet's architecture is changed, it can reduce the number of possible attacks that can be sent across the network. Knowing the attack methods enables us to respond with adequate security. Many businesses use firewalls and encryption mechanisms to protect themselves from the internet. To stay connected to the internet, businesses create an "intranet."

Keywords : Data Security, Network Security, IPv4, IPv6, Internet Architecture