Such an OS doesn't appear to exist, but I found a way to satisfy these requirements by combining a couple of existing software packages. The tendency with most NOSes is to activate all services by default. This makes it easier for the inexperienced admin to set up a server, but results in one that is wide open to attack. Since we're looking for a security improvement, I wanted an NOS which when installed activates a minimum of services automatically.
Specifically, I was looking for a Linux distribution that was designed somewhat along the lines of OpenBSD, i.e., "secure by default." Also, it should also give me flexibility as to partitioning and what software is installed.
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