There are archives of podcasts-{other formats available} -
https://www.grc.com/securitynow.htm
you can test your ports /shields -Welcome to ShieldsUP!-
https://www.grc.com/x/ne.dll?bh0bkyd2
[Our Growing Collection of High-Quality, Super-Small and
Super-Fast, Freely Downloadable Programs & Resources]
https://www.grc.com/freeupdated.htm