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uhh...hi everyone after a long days i have started posting tut so lets get started today we will be installing nessus scanner on backtrack and using it.Check my long old post :D

What is Nessus is For?

Nessus is a network vulnerability scanning program thats give you power to find you all the Vulnerability present on the network/host . 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/

So we will discuss how we can install it online (if you are having internet connection)
Nessus 4.4.1 now comes pre-installed on BackTrack 5 and requires that the user activate the installation.
Here are the commands to install nessus : open terminal and type(if you don't know :P)

apt-get install nessus

After install it, create an account with adduser command like this

/opt/nessus/sbin/nessus-adduser
After you've entered a username, the nessus-adduser program asks you if the user account should have admin privileges or not. It is recommended that the initial user account have admin privileges so you can use the Nessus Web Interface to create subsequent accounts. The only difference between a Nessus admin user and a regular user is the ability to create user accounts.

Registering Account For Nessus


Once you have Nessus installed on BackTrack 5, you will need to obtain a Nessus activation code. If you wish to purchase a ProfessionalFeed, you can visit the Tenable Store. If you are using Nessus at home or wish to evaluate Nessus, you can register a HomeFeed. It’s important to note that the HomeFeed is limited to 16 IP addresses per scan (whereas the ProfessionalFeed allows you to scan an unlimited number of IP addresses). The ProfessionalFeed also gives you access to features such as Configuration and Sensitive Data Auditing, SCADA plugins, Nessus Technical Support and access to the Tenable Customer Portal.

After registering they will send you activation code 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/
(You can also access the Nessus Web Interface remotely/outside by using the IP address assigned to BackTrack 5 (e.g. https://192.168.37.210:8834/).)

Nessus will run on the secure channel https and on the port number 8834.


Now try and use Nessus for your own risk :-D..

Next tutorial i will post how to scan a host and get a report using nessus scanner.if you need anyhelp on any tools do post as a comment i will definitely reply on you also i also encourage everyone to use Backtrack if you wann learn more on security things
.

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