Sophos UTM HA AWS - How to configure packet filtering through the UTM from two other VPC's connected through peering connections.

Dear Sophos Community:

I used the Cloud Formation stack to deploy the Sophos UTM HA within it's own new VPC with a warm standby in a second availibilty zone. I have two separate VPC's, which contain Linux EC2 Iinstance in one and Windows EC2 instances in the other. I have been able to create a Peering connection to the Linux VPC and can ping hosts in that VPC from the Sophos Master instance. What I am stuck on is, how to route all the traffic from the 2 other VPC's using peering through the Sophos UTM using only the one configured EIP (eth0) on the Sophos Master Instance. I believe it involves some special routing tables and security groups within AWS, but I haven't figured it out yet. Also, Iwant to have two VPN tunnels defined as well. I am new to using Sophos UTM, but am eager to learn all I can. I recveived feedback from a Sophos AWS specialist in the UK, and he stated from looking and my AWS network planning diagram that it can be done using the one EIP (Public). I configured access to WebAdmin and can SSH using loginuser and su - to root user with no issues.

Any assistance is highly apprecitate,

Thanks,

Scott Spangler