Concept of Network security

Network security incorporates various technologies, processes, and devices into a broad strategy that protects the integrity, confidentiality, and accessibility of computer networks. Organizations of all sizes, industries, or infrastructure types require network security to protect against an ever-evolving cyber threat landscape.The security is a most important part of every network design. Planning, building, and operating a network, it should understand the importance of a strong security rule. Network Security is a security rule that defines what people can and can't do with network components and resources. The fundamental purpose of a network security is to protect against attacks from the Internet. There are many different ways of attacking a network such as: Hacker attacks whereby a remote Internet user attempts to gain access to a network, usually with the intention to destroy or copy data. The major attacks to network security are passive attack, active attack, distributed attack, insider attack; close in attack, Phishing Attack, Hijack attack, Password attack etc. However a system must be able to limit damage and recover rapidly when attacks occur. So there are various solutions when any of above attacks occurs. Some of the common solutions of these attacks are firewalls, user account access controls and cryptography. The first major challenge for network security is the rapid evolution of the cyber threat landscape. Technologies evolve quickly, and attackers find new ways to infiltrate and exploit corporate networks, requiring businesses to implement new defenses to protect their networks.