I'm in the process of installing a firewall and would like to harden the OS by installing only the bare minimum OS packages required for the firewall software to run.
The firewall vendor has not provided any OS hardening document. How do I find out which files (and from that info -> which packages) are required for the firewall to run?
I have set up another (test) system with a full OS install and the firewall installed and am in the process of digging into it.
Any help would be appreciated.