Forum Discussion
O365 Multi forest ADFS <> Domain Controller Communication
We currently have the following setup:
2 AD forests (with a 2way trust)
Contoso.com
Fabrikam.com
ADFS & AADC deployed in the Contoso.com forest connected to the O365 tenant
AADC is s...
443 is not enough, unless Fabricam has their own ADFS.
I think that you need at least 389 and 636 (SSL) for LDAP, but here is the full list of possible ports: https://support.microsoft.com/en-us/help/832017/service-overview-and-network-port-requirements-for-windows#4