No I am not referring to Nessus who is a centaur killed by Heracles! I am talking about the Nessus program or tool which is a vulnerability scanner and is pre-installed in Backtrack 5. Before a user can use it, he needs to register an activation key in the Tenable or Nessus Website which can be used in activating the tool. And so let’s activate Nessus:
1. Enter the key using nessus-fetch command (Make sure you are connected to the net.duh!):
/opt/nessus/bin/nessus-fetch –register *code-****-*here**-****
2. Create a user and password (used for logging in to the Nessus Web Interface) for security purposes by typing:
3. Start the service or process by typing:
4. And lastly, access the web interface and start playing. The web interface can be accessed with your browser by making an HTTPS connection to TCP port 8834 (e.g. https://127.0.0.1:8834/).