It doesn't seem as though it is. And I've had very negative experiences with Hamachi in the past so I'm very reluctant to try it when I've successfully portforwarded anyways.
Recent community posts
Trying to play NTT with my girlfriend, every time she tries to connect she gets CONNECTION_TIMEOUT.
Using the default port 5394, seemingly did everything right. I've got no clue what's up.
If it means anything, I'm running NTT through Wine on Xubuntu 18.04.