Hey Andrew,
Could you clarify a bit what your set-up looks like? Which computers have which OS's, how are you attempting to connect, what have you installed, how have you configured what you've installed, what messages or information are you seeing, etc.?
Also, just for information in future, this thread would probably be better posted to the
Compute Engine group. In fact, you still could do so, as it's more likely to find more helpful users there.
Cheers,
Nick
Cloud Platform Community Support