Commercial vulnerability scanners
Most threat actors utilize open-source tools to launch attacks; however, commercial vulnerability scanners come with their own advantages and disadvantages in the penetration testing process. In this section, we will learn how to install Nessus and Nexpose in Kali Linux, and since these scanners are backed up by respectable companies, they have comprehensive documentation, so we will not be taking a deep dive into configuring these tools.
Nessus
Nessus is one of the old vulnerability scanners that was started by Renaud Deraison in 1998. It was an open-source project till 2005 when the project was taken over by Tenable Network Security (co-founded by Renaud). Nessus is one of the most commonly used commercial vulnerability scanners in the security community for network infrastructure scanning. Note that Tenable has multiple security products. In this section, we will explore the installation of Nessus Essential.
The following...