Nessus is a free remote security scanner that aims at strengthening the open source technology. Although the security software is easy to use, it requires quite an amount of time to understand the intricacies of the tool for effective use. Nessus is based on the client server architecture. The security software is a multi platform tool that can be run on various operating systems including Linux, windows, and UNIX. Vulnerability scans can be run from the administrative console.
Unlike most other open source software that users have to struggle installing, Nessus is comparatively easy to install. The software empowers you to either use default settings or customize it according to your preferences. Free download of Nessus for personal use is available at the company’s website, however, the company insists on purchasing the license for commercial use. Upon using the tool, the scan results report the possible weaknesses and also provides the nature of the problems and possible solutions. The product is well supported by the author via FAQs, knowledge base, email, phone and discussion forum.