I am working with company that is using VM-Series appliances in AWS for site to site VPNs. The VPNs need to be up all the time but have low throughput requirements. To host multiple VPNs on one VM-Series they currently have to setup a virtual network interface, each with a public IP, for each VPN. They are looking to scale this method in a more cost effective way because you have to pay monthly for every public IP address and there is a limit to the amount of IP addresses per instance.
Does anyone know of a way to use a single Public IP address for multiple VPN connections on a VM-Series in AWS? I found some documentation talking about setting up two IPSec tunnels but I know they are looking to connect a lot more. Not sure if this is possible. I believe they would also consider migrating to a NGFW if that would make a difference.
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