Cloud computing is the on-demand availability of computer system resources, especially data storage and computing power, without direct active management by the user. The term is generally used to describe data centers available to many users over the Internet…

Computer security, cybersecurity or information technology security is the protection of computer systems from the theft of or damage to their hardware, software, or electronic data, as well as from the disruption or misdirection of the services they provide…

The purpose of ethical hacking is to evaluate the security of and identify vulnerabilities in systems, networks or system infrastructure. It includes finding and attempting to exploit any vulnerabilities to determine whether unauthorized access or other malicious activities are possible…

Forensic science, also known as criminalistics, is the application of science to criminal and civil laws, mainly—on the criminal side—during criminal investigation, as governed by the legal standards of admissible evidence and criminal procedure…

Hacking refers to activities that seek to compromise digital devices, such as computers, smartphones, tablets, and even entire networks. Hackers are motivated by personal gain, to make a statement, or just because they can…

How Technology Works demystifies the machinery that keeps the modern world going, from simple objects such as zip fasteners and can openers to the latest, most sophisticated devices of the information age, Learn how technology Works…

Kali Linux is a Debian-based Linux distribution aimed at advanced Penetration Testing and Security Auditing. Kali contains several hundred tools which are geared towards various information security tasks, such as Penetration Testing, Security research, Computer Forensics and Reverse Engineering.

Linux is the best-known and most-used open source operating system. As an operating system, Linux is software that sits underneath all of the other software on a computer, receiving requests from those programs and relaying these requests to the computer’s hardware…

A computer network is a digital telecommunications network which allows nodes to share resources. In computer networks, computing devices exchange data with each other using connections between nodes. Learn Networking…

Penetration testing, also called pen testing or ethical hacking, is the practice of testing a computer system, network or web application to find security vulnerabilities that an attacker could exploit. Penetration testing can be automated with software applications or performed manually.

Vulnerability refers to the inability to withstand the effects of a hostile environment. A window of vulnerability is a time frame within which defensive measures are diminished, compromised or lacking.

Linux System Administration and Configuration

After installation, Linux requires configuration and systems administration. Corporate systems need monitoring, backups, updates, as well as system and user management. Ubuntu, CentOS, Fedora and Red Hat Linux server administration and desktop systems adminstration are covered in this tutorial.