To use Scapy to perform UDP scanning, you will need to have a remote system that is running network services over UDP. In the examples provided, an instance of Metasploitable2 is used to perform this task. To use Scapy to perform stealth and connect TCP scans, you will need to have a remote system that is running accessible network services over TCP. In the examples provided, an instance of Metasploitable2 is used to perform this task. To use Scapy to perform a zombie scan, you will need to have a remote system that is running TCP services and another remote system that has incremental IPID sequencing. In the examples provided, an installation of Metasploitable2 is used as a scan target, and an installation of Windows XP is used as an incremental IPID zombie.

For more information on how to set up Metasploitable2, refer to Chapter 1, Getting Started. Additionally, this section will require a script to be written to the filesystem using a text editor such as Vim or GNU nano. For more information on how to write scripts, refer to the Using text editors (Vim and GNU nano) recipe in Chapter 1, Getting Started.