CHAPTER Scanner scripting INFORMATION IN THIS CHAPTER: · Working with Scanning Tools · Netcat · Nmap · Nessus/OpenVAS 7 In this chapter, we will discuss how we can use and customize a few of the more popular scanning tools commonly found in penetration testing environments. Once again, we'll be using the BackTrack 5 Linux security distribution, and everything we'll be talking about will either already be found there or can easily be installed. Although scanning tools are often useful in and of themselves, Nmap being an excellent example, we can often do considerably more with them if we are willing to devote the time and resources to learning how we can customize them. Many such tools provide us with the facility to customize or add to their default behaviors, either through easy avenues such as scripting or plug-in engines, or, failing that, by being