You're welcome, All on a VM you can do something with pFsense installation - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-c876L7dU6b8.html , NMAP - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-BzE407XGXwk.html , this video gives you some other ideas too - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-0LxVcNJUSdY.html
If you are changing careers into Cybersecurity , Harvard CS50 will be a sort of "distraction" in my opinion. There are more Cybersecurity Focused entry courses you can take. Watch out, I'll drop a video on Monday about certification/courses for beginners/career switching