How to instal nesus in Backtrak

1. First Download it from:
http://www.tenable.com/products/nessus/select-your-operating-system

2. Type command:
select the version of nessus to suit your needs

root@bt:~# apt-get install nessus

3. After getting Nessus on you BackTrack 5 R1 you need to add a user, you can add multiple user as well, on the terminal type

root@bt:~# /opt/nessus/sbin/nessus-adduser

4. Registration phase is important and you need to decided that what you want a home feed or a business feed, for registration go http://www.nessus.org/register/

Than on the terminal type:

root@bt:~# /opt/nessus/bin/nessus-fetch --register YOUR KEY

5. Now start nessus on the terminal, For this type:

root@bt:~# /etc/init.d/nessusd start

6. Than at the browser use https://127.0.0.1:8834 to start nessus.