Do I need to set my gateway to Bridge Mode?
This morning I called into Comcast support and had a technician remove the static IP address on our service. I wanted this because a few weeks ago I found out that the Cradlepoint 4G backup does not work with a static IP. Once the static IP was removed, I reset the WAN interface on our firewall to DHCP (it was configured with our static IP previously). I am not 100% sure, but I could have sworn that the firewall then pulled the same IP that was on the gateway.
The tech was having some issues so we reset the gateway a few times. It may have even been factory defaulted. I don't know when it happened, but now our firewall has a 10.1.10.x IP address from the gateway. Nobody is able to connect via VPN. I am using a DDNS record for VPN. I can ping the DDNS record and it shows the gateway IP correctly. I really think that the firewall needs to somehow have the same IP address as the gateway.
I called in a second time and the representative I spoke to suggested pass-through mode by disabling the firewall (on the gateway). This did not work. She also suggested that I try port forwarding. This did not work either, but I will admit that I was unsure what settings to use. I just guessed at using HTTPs, forwarding to the IP of the firewall and using port 443.
Can anyone tell me if enabling Bridge Mode is what I need to do to make VPN work again? Or can you at least tell me if it will give my firewall the same IP address as the gateway? Sorry if this message is too long. I just wanted to provide as many details as possible.