

In the end, the private key for the service communications certificate is trusted by all relying parties. They offer security translation, and as such can be abused to create claim tokens that misrepresent information towards cloud applications. Reasons whyĪctive Directory Federation Services (AD FS) servers are typically placed on the internal network, close to Active Directory Domain Controllers. It changes the default behavior of products and services to make them more resilient to unauthorized changes and compromise. Hardening provides additional layers to defense in depth approaches. However, as management of AD FS on Server Core installations is PowerShell-only, we also include information for AD FS Servers running Windows Server 2016with Desktop Experience (Full). This blogpost assumes you’re running AD FS Servers as domain-joined Windows Server 2016 Server Core installations. This way, we lower their attack surfaces. In this part of the series, we’ll harden the AD FS Server installations, by disabling unnecessary services running on it. In this series, labeled Hardening Hybrid Identity, we’re looking at hardening these implementations, using recommended practices. Most Microsoft-based Hybrid Identity implementations use Active Directory Federation Services (AD FS) Servers, Web Application Proxies and Azure AD Connect installations.
