I have found a ton of articles on how to fail over corporate servers and resources to a DR site. The process seems very straight forward and as long as your internal users can work and are able to access local resources / servers all is well.
However we have the need to fail over several servers that provide external hosting of services like www hosting, VoIP PBX servers, mail servers etc.
All of these servers at our production site have complex firewall policies and WAN static routes configured and ultimately top level registrar DNS pointing traffic to our various static WAN IPS and in turn routing to local server targets based on ports and traffic type.
We have setup a VPN site to site with no issue and are easily able to replace VMS to the Dr site.
The Datacenter site is 192.168.15.x and the DR site is 192.168.30.x
We can easily fail over a replaca and re ip them to 192.168.30.x IPS and have tested this. The problem is the VM is useless as there are no firewall routes to them once published in the DR site. You can ping them at 192.168.30.x but otherwise their hosted roles are all down.
What is the proper way to accomplish fail over to a DR Site and have your vms are RE-IP then route hosting servers and dns properly?
Thanks