A few stupid tweaks to add after installing Parrot Security

Believe it or not, there are (smart) people using command line mail clients in 2020.

How to add a VDO disk to a virtual machine to add storage while taking advantage of transparent compression and deduplication

Fail2Ban is an intrusion prevention software written in Python that protects computer servers from brute-force attacks

ufw (Uncomplicated FireWall) commands are complicated, but there is a cheat sheet here