Networking on Alienvault as a HyperV Guest

The information here was compiled while using Alienvault 4.6 and I know that 4.3 required the same steps. If you're using a different version, you may need to take different or additional steps. If you're using a newer version, perhaps this is all sorted out already.

Hyper-V replication across the WAN

I've recently been working on Hyper-V replication across the Internet to give our clients the option of maintaining an offsite copy of their server in our data center. Everything was going smoothly up to a point. I set up a site-to-site VPN connection between them and us, built an Active Directory two way trust between their domain and ours, and then tried to enter their Hyper-V host into our System Center Virtual Machine Manager system.  This is where I ran into a road block.