The primary goal of network security is to protect the network infrastructure and the data transmitted over it from unauthorized access, attacks, and other threats.

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

Encryption is the process of converting data into a format that cannot be easily understood by unauthorized users, ensuring secure communication and protection of sensitive information.

A Virtual Private Network (VPN) creates a secure and encrypted connection over the internet, allowing users to safely access remote networks and protect their data from interception.

An IDS monitors network traffic for suspicious activity and potential threats, alerting administrators of any malicious actions or breaches.

Multi-factor authentication adds an additional layer of security by requiring two or more verification methods, such as a password and a one-time code sent to a mobile device.

Network segmentation involves dividing a computer network into smaller, isolated sections to improve performance, security, and reduce the attack surface.

SSL/TLS certificates provide encryption for communication between a server and a client, ensuring that sensitive information transmitted over the internet is secure.

A Distributed Denial-of-Service (DDoS) attack involves overwhelming a server or network with massive traffic, making it unavailable to users.