Not sure, they changed license server types recently for newest NX. But new server should support backwards. They have NX12 linux GUI version supported , latest NX release only runs Linux batch NX---for who know why
I miss NX. My company uses SolidWorks, and it's...okay, I guess? But I'm aggravated on a weekly basis because it doesn't do something that NX could. But cost is the issue. I think you can get like 5 SW licenses for the cost of a single NX one.
Siemens has a 3 to 1 model license option now. Up to 3 users of Solid Edge, but if they check theirs all in, you can pull 1 NX license. A nice compromise for when you need more power