In this recipe, we will cover the process of updating BackTrack and configuring some extra tools, which will be useful in later chapters and recipes. As BackTrack packages are constantly updated between releases, you will soon find that a newer set of tools are available than what were originally downloaded on your DVD ROM. We will dive into updating our installation, obtaining an activation code for Nessus, and concluding with installing Squid.
How to do it...
Let's begin the process of applying updates and configuring extra security tools:
1. Update the local package index with the latest changes made in the repositories:
apt-get update
2. Upgrade existing packages:
apt-get upgrade
3. Upgrade to the new version (if available):
apt-get dist-upgrade
4. Obtain an activation code for Nessus by registering at the following website:
http://www.nessus.org/products/nessus/nessus-plugins/obtain-an-activation-code
5. Activate Nessus by executing the following command:
/opt/nessus/bin/nessus-fetch --register A60F-XXXX-XXXX-XXXX-0006
Where A60F-XXXX-XXXX-XXXX-0006 should be your activation code.
6. Create a user account for the Nessus web interface:
/opt/nessus/sbin/nessus-adduser
7. To start the Nessus server, we simply invoke the following command:
/etc/init.d/nessusd start
8. Install Squid:
apt-get install squid3
9. Remove Squid from starting up automatically at boot time:
update-rc.d -f squid3 remove