Anyone know whether ISP redundancy mode will support mixed networking routing relationships? I'll explain.
I have two Internet facing NIC's, one is configured with ISP A with a public IP (e.g. 184.108.40.206), the second is via an RFC1918 perimeter (192.168.2.0), which then connects onto the Internet via a router with a public IP.
Do I need to configure I three-legged setup within TMG or will a back-to-back configuration do? It seems that TMG gets confused with the network relationship, since the route onto ISP A needs to be NAT'd and onto ISP B, it needs to be routed.
Is this a supported configuration for ISP redundancy?
Good question. I would think that it would not matter if you're using a private address on one of the external interfaces, as long as you're not using that network ID in a definition for any other TMG Networks.