The link above refers to a python script that is to be run on Ubuntu. When I run the script, the following error appears on the screen:
Error opening port: /dev/ttyUSB0 The error was: ("could not open port /dev/ttyUSB0: [Errno 2] No such file or directory: '/dev/ttyUSB0'",)
I think that the script is supposed to translate data from FTDI to a Wireshark (pcap) format through so-called PIPEs. So probably it is searching for FTDI.