Ok. I was confusing VLANs with VPN. I re-read about them.
Let me try summarizing the situation. Please correct me if I'm wrong.
* Can I configure a VPN with my existing Arris Interactive, L.L.C. TG862G router? Or do I have to have a new router for any VPN, because by definition, it needs its own router?
How can I tell if it supports a VPN?
* If I need a new dedicated router for the VPN, I can get a "like new" Netgear WNDR3800 N600 for $55 - $70.
* Once I know which router to use, I can download OpenVPN and configure it.
OpenVPN - Open Source VPN
It is free with no license?
* There will still be port forwarding, but only the port that is configured on OpenVPN.
Let me see if I understand this much, before asking more questions.