Verizon might upgrade your router at no charge since you have Quantum and an old router. You'll have to contact them directly and ask. This forum is for customer peer-to-peer support.
If you don't want to talk to them, you can buy a router from them here:
https://teleproducts.verizon.com/fios/index.cfm/eh/DisplayProducts
Oh, I wouldn't mention that you run a server when you talk to them. That is most likely a violation of the terms-of-service.
Good Luck