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You could consider consolidating authentication and routing through a reverse proxy setup; many b2b lead generation usa agency teams handle similar infrastructure limits by optimizing domain mapping under a single IP.
Public DNS
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TomaszW-0873
156
Reputation points
I plan to setup a small (2-3 apps) with ADFS.
I suppose I have to put in public DNS the ip address of a server with each app and a ip address of my adfs proxy server?
Problem is that my ISP can provide me with only one external IP address and I am thinking how (and if) that can be omitted.
Microsoft Security | Active Directory Federation Services