Actually the firewall thing was my experience with Ubuntu. I tried to setup linux in a VM to learn to use it, and failed on what I thought would be a simple first step: configure it so that I can connect to the VM using RDP. That involves tweaking the firewall and installing an RDP server. I finally discovered ufw but the original instructions involved creating a security group, etc. As for the RDP thing, I still have&#x27;t found a stable solution (but have long deleted the VM since).