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Back again this year is our old friend Nessus from Tenable Network Security. For as long as most can remember, this has been a necessary tool in any vulnerability assessment toolkit. It is easy to see why. Nessus has become increasingly lightweight and easier to use over the years, and this version is no different. It can scan many devices on the network for vulnerabilities, and its device list is always growing longer. Nessus can scan MicrosoftWindows and Linux systems, databases, web applications and Cisco routers and switches, among many others.
Installation is straightforward and only takes a few minutes. Initial setup is done by running a single installer, which, after a short setup wizard, installs both the Nessus server and a shortcut to the company's web interface. After installation is complete, the server can...