Forum Discussion
Access On Premise Apps Using Entra Identity
Hi MRSrun
For the old domain, for one reason or another I cannot add it to Entra ID, so the user account in Entra uses the new domain. Therefore, I cannot synchronize the user identity.
If so, can I use the Entra Application Proxy method to accommodate user access with Entra identity (new domain) to the on-premise application (old domain)?
You can use Entra Application Proxy to enable users with Entra ID credentials (email address removed for privacy reasons) to access on-premises apps tied to the old domain (olddomain.local), even without identity synchronization. The key is to configure user mapping and KCD correctly. If your apps require LDAP or complex authentication, consider Entra Domain Services or a third-party identity provider, but Application Proxy is likely sufficient. As long as we talking about webapps, when we talk about legacy apps it´s more complicated and it makes sense to have a Name of the application you´d like to use. With out this knowlege it is like searching in the dark.