The LDAP Proxy is hosted by the Infrastructure Manager, a service that is managed by Jamf Pro. After you install an instance of the Infrastructure Manager, Jamf Pro allows you to enable an LDAP proxy connection if you have an LDAP server set up in Jamf Pro. For more information, see Jamf Infrastructure Manager Instances in the Jamf Pro Documentation. The connection between your infrastructure manager instance and the LDAP server over SSL needs to be verified. This may take some time depending on the Recurring Check-In Frequency setting of your infrastructure manager instance configuration. LDAP connections will work only after the successful verification. To find out the status of the verification, see the Jamf Pro Notifications section.