check whether Firewall is started /usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate https://krypted.com/mac-security/command-line-firewall-management-in-os-x-10-10/
How to Make a Bootable macOS Catalina 10.15 Beta USB Installer Drive This process requires using the command line, if you are not comfortable using the Terminal than it is…