In this section, we are going to look at gaining access to the computer device. The computer device means any electric device like a phone, a laptop, a TV, a network, a router, a website, a server. Each device has an operating system, and they have the program installed on these operating systems. We will look at how to gain access to the computers. In this example, we are going to use a computer.

Encapsulation security payload, also abbreviated as ESP plays a very important role in network security. ESP or Encapsulation security payload is an individual protocol in IPSec. ESP is responsible for the CIA triad of security (Confidentiality, Integrity, Availability), which is considered significant only when encryption is carried along with them.

The post-exploitation is used to determine the capabilities and base value of the target system. The main purpose of post-exploitation is to gain access to all parts of the target system without knowing the user or without being detected. If the attacker is detected, it will make all the effects useless and everything null. A penetration tester is used to exploit the target's computer system without any authentication and analyze the data's value presented on the system of the victim.

In a prevention-based strategy, an organization does its best to harden its systems against attack. In a detection-based strategy, a company’s security team proactively works to identify and remediate threats that have breached the organization’s defenses.