VPN Issues with non-Comcast equipment
We are trying to do multiple VPN connections for a small business with a Comcast Business Internet connection – Comcast only allows one VPN connection to one inside device at a time (NAT, not PAT) and that will not do. Bought a Zoom 5341J modem and Internet is flowing through it to an Ubiquiti ERLite-3 just fine – likely because DHCP is linking the ERLite-3 to the Comcast end. That being the case, we have a static and gateway IP (from Comcast) to set to do VPN in the router. I am finding that upon entering that info into the correct GUI fields in the ERLite-3 it kills the Internet connection. I called Comcast and asked them to set the static IP on their end so it binds to the MAC of the modem – I gave Comcast the MAC of the modem previously. (Sidebar: I have taught CISCO networking for many years and that is normally how it is done: vendor IP’s their end and you IP your end.) Comcast Level 1 support says they cannot do this (bind the static IP to the MAC of the modem) and we must use their equipment – a consequence I have read over and over again in these and other forums. The question is, should I just fire up the Comcast SMCD3G modem/router again and have Comcast place it into bridge mode? Will this scenario work in bridge mode? I’d remove the Zoom from the mix and return it to the vendor if this works. Has anyone had success with this working with this scenario? I’d love to use our own gear (Zoom, ERLite-3) and send back the SMC unit. Maybe someone above Level 1 support knows how to set the static address on the Comcast end for the MAC of our Zoom.
Thanks for any input, how to proceed, etc.,