Tenable Network Security
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Agentless Audits
Test patches, configs and content
High Speed Scanning
Scan your entire network in no time
In-Depth Assessments
Test network devices, systems and applications
Enterprise Ready
Security Center manages Nessus scans, reporting, asset discovery and user roles
Policy Compliance
Test systems and databases for compliance with PCI, FDCC and other standards
The Nessus vulnerability scanner is the world-leader in active scanners, featuring high-speed discovery, configuration auditing, asset profiling, sensitive data discovery and vulnerability analysis of your security posture. Nessus scanners can be distributed throughout an entire enterprise, inside DMZs and across physically separate networks.

Nessus supports the following types of security audits:
  • credentialed and un-credentialed port scanning
  • network based vulnerability scanning
  • credentialed based patch audits for Windows and most Unix platforms
  • credentialed configuration auditing of most Windows and Unix platforms
  • robust and comprehensive credentialed security testing of 3rd party applications such as iTunes, JAVA, Skype and Firefox
  • custom and embedded web application vulnerability testing
  • SQL database configuration auditing
  • software enumeration on Unix and Windows
  • testing anti-virus installs for out-of date signatures and configuration errors
Nessus can also be used for ad-hoc scanning, daily scans and quick-response audits. When managed with the Security Center, vulnerability recommendations can be sent to the responsible parties, remediation can be tracked and security patches can be audited.

Nessus is supported by a world renowned research team and has the largest vulnerability knowledge base, making it suitable for even the most complex environments.

Nessus 4.2 Screenshots
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This is the web site for the Nessus Vulnerability Scanner from Tenable Network Security. If you are looking for the probabilistic analysis software from Southwest Research Institute, please visit www.nessus.swri.org