So allowing players to slice a computer system from their ship is an option if they are able to setup a way to connect to that network directly. Just going through the Holonet is often not an option unless you are trying to slice the station/planet wide news feed.
People here have no idea how many VPNs and Bastion Hosts I have to jump through in order to get to lab test equipment of certain … sensitive … customers. Not their production networks, just the test networks that aren’t connected to the production networks in any way.
And that wouldn’t be anywhere remotely close to what you’d have to go through to get onto classified military networks.
For anyone who wants to seriously debate this topic, I suggest that you go get a DoD/military job, with a Top Secret clearance, and maybe add a few SCI compartments to that.
Once you get there, feel free to come back here and tell me how easy it would be.
HINT: I had a TS/SCI clearance, and I know what it took back when I was working at the Pentagon.