Install Nessus 4 on Ubuntu 11.04 x64

1. Download the package (Nessus-4.4.1-ubuntu1010_amd64.deb) at http://www.nessus.org/products/nessus/nessus-download-agreement
2. Install the package:
   

   sudo dpkg -i Nessus-4.4.1-ubuntu1010_amd64.deb

3. Add a user:

   sudo /opt/nessus/sbin/nessus-adduser

4. Register Nessus scanner at http://www.nessus.org/register/
5. Activate account:
   

   sudo /opt/nessus/bin/nessus-fetch --register XXXX-XXXX-XXXX-XXXX-XXXX

6. Start nessusd
   

   sudo /etc/init.d/nessusd start

7. Connect to Nessus Server at https://localhost:8834/