Site to Site VPN with more than 2 internet connections.
I am doing Site to Site VPNs between multiple TZ-270s and a NSA-2700.
Each Sonicwall has two internet providers in a failover configuration.
Due to how one of the providers does their networking, the X0 interface has a Private static ip. This IP has to be used for any other devices on that provider when connecting to it. For devices not on that provider there is a Public static ip. that maps to the Private ip. Connections between devices on this provider can not use the Public ip to connect to each other.
Therefore each device may need to connect to 3 remote IPs and needs to accept connections from the same three.
IP1 normal operations.
IP2 if local device is on its secondary provider.
IP3 if remote device is on its secondary provider.
Can I use a DNS name with 2 IPs for the provider with the Private IPs?