The Center for Internet Security (CIS) publishes a terrific set of benchmarks that all organizations should use as a minimum standard if they do not have any other baseline in place. The downloads are free, but unfortunately, the downloads are only available in PDF form, which is often not ideal to work with. Below are links to Excel versions for some of the common Operating Systems
- Linux Distributions
- Distribution Independent Linux Benchmark
- Ubuntu 18.04 LTS
- Red Hat Enterprise Linux 7