Exploring the OpenVAS vulnerability scanner
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© Bram Janssens, 123RF
If you prefer to travel light and free, try OpenVAS, a GPLed fork of the Nessus scanning tool.
The Internet has become more dangerous over the years, with constantly changing threats and ever more sophisticated attackers. As have most security professionals, we have seen all manner of clever schemes designed to part businesses from their money and data. To help discover and manage threats, we rely heavily on free software tools. One of the most popular security tools is the Nessus vulnerability scanner by Tenable Network Security [1], which many have used to look for vulnerabilities on customer networks.
The decision by Tenable to change the licensing for commercial use was viewed with frustration by a number of security professionals. Prompted by the final announcement on Slashdot in October 2005 that Nessus would be closed source, Tim Brown made the decision to announce a fork. The result of that effort is OpenVAS [2], a free software fork of the Nessus vulnerability scanner predominantly licensed under the GPL.
At this time, OpenVAS has a thriving community, with contributions from both individuals and corporations from all over the world. The OpenVAS project is a member of Software in the Public Interest, a non-profit organization dedicated to helping organizations develop free software. A recent successful developers conference had 16 participants from four continents, and we have more than 13,000 vulnerability checks committed to our public SVN repository.
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