COMPUTER FUNDAMENTALS

Detailed explanation-1: -An intrusion detection system (IDS) is a computer program that monitors network or system activities for malicious activity or policy violations. If the IDS detects suspicious behavior, it alerts the intrusion prevention system (IPS), which then takes action to stop the attack.

Detailed explanation-2: -The Intrusion Prevention System (IPS) is a unique technology that detects malicious activity and blocks the exploitation of software vulnerabilities in real-time, preventing security concerns. Unauthorized access is limited by technology, which prevents attackers from accessing apps or hardware.

Detailed explanation-3: -In IP networking, those small pieces of data are called packets. All data transfer across IP networks happens in the form of packets. The basic device that interconnects IP networks is called a router.

Detailed explanation-4: -IPSec uses two distinct protocols, Authentication Header (AH) and Encapsulating Security Payload (ESP), which are defined by the IETF. The AH protocol provides a mechanism for authentication only. AH provides data integrity, data origin authentication, and an optional replay protection service.

Detailed explanation-5: -A packet filtering firewall is a networking device that examines the header information of data packets that come into a network and determines whether to deny them or forward them to the next network connection based on its configuration rules.