@lanodan @amerika @cjd @h4890 @sj_zero @threalist Yeah, that's what was interesting, it's a pathological network topology. So how do you stop a machine outside the network from influencing anything happening inside it? And this solution is this weird topology, so I was thinking how you might do it without specialized hardware like mentioned in https://social.fbxl.net/objects/f67daf44-29c4-487a-9d82-419562ea9c87 :

> there's a device called a data diode which can't be hacked traditionally because it can only send signals outward and not inward. Think of a fiber optic cable where you only have a transmitter on one side and a receiver on the other, or an AM radio -- you can't hack the radio station no matter how you turn the dial on your am radio because the info only moves from the station to your radio.

That's kind of interesting. So you don't *want* the outside network to do anything to your MTU size. Zero incoming information.