How to Install Nessus on Backtrack 5 R3

Nessus is a network vulnerability scanning program. It is free for personal use. Its can detect vulnerabilities on the systems. Nessus is the most popular vulnerability scanner in the computer security. Nessus allows scans for vulnerabilities, misconfiguration, default passwords / common passwords / blank passwords on some system accounts, etc. You can use Nessus to scan your system and patch the vulnerability. If you want install Nessus on Backtrack 5 R3 first thing to do is download it from http://www.tenable.com/products/nessus/

Download the Nessus package from http://www.tenable.com/products/nessus/ and install it manually. Read my post before about How to Install Package on Backtrack 5 after you install it, skip to step two. If you have internet connection you can install Nessus from repository. Run this command to download and install Nessus.
apt-get install nessus

After install it, create an account with adduser command like this
/opt/nessus/sbin/nessus-adduser

Now register to Nessus website http://www.nessus.org/register/ to get your activation code that send to your email. After you get the key, run this command, fill change xxxx-xxxx-xxxx-xxxx-xxxx with your key
/opt/nessus/bin/nessus-fetch --register xxxx-xxxx-xxxx-xxxx-xxxx

It will take some time because plugin is being updated. After the update complete, run your Nessus
/etc/init.d/nessusd start

Then open your browser and type this in the URL of the browser
https://localhost:8834/

Nessus will run on the secure channel https and on the port number 8834. Now try and use Nessus for your own risk :-D