Nessus v4.0.1 Released

June 7, 2009 – 8:51 PM

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.


  • Fixed memory & register leaks in NASL
  • nessus-fetch now supports Basic, Digest, and NTLM proxy authentication schemes
  • The timeout for NessusClient TCP socket was too low and has been increased
  • The ’nessus’ cmd line tool would sometimes leave temporary files on the filesystem
  • Improved performance for reverse DNS lookups
  • Knowledge Base files would sometimes not be created for targets where the user specified a hostname
  • Pinging a remote host would sometimes fail if the ARP address of the gateway was not in the local cache
  • On some configurations registration would not complete
  • Manage users’ would not change the users passwords
  • NessusClient would sometimes close a modified report without asking to save first
  • The Nessus server now runs on Windows 7. However, Windows 7 is not officially supported at this time. Features such as packet forgery are not yet functioning
  • In some cases Nessus would not work on Mac OS X 10.4
  • NessusClient would display the IP addresses of the target in reverse order on Mac OS X PPC
  • On Linux 64-bit versions, Nessus would generate error messages in dmesg


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