Nessus security scanner

Nessus is a vulnerability scanning program that can scan for the following types of vulnerabilities:

  • Default or blank passwords.
  • ƒ DoS attacks against the TCP/IP stack using invalid packets.
  • ƒ Various misconfigurations, including old software versions and open mail relay.
  • ƒ Various vulnerabilities that may allow a hacker to damage a system.


Nessus is free of charge for personal use.