| K2 blackpearl Installation and Configuration Guide > Installation > Integration Configuration > SSL > SQLUM Requirements | Send feedback |
K2 blackpearl’s alternative natively supported user manager, supports Server Certificate based SSL only. Client side certificate SSL is not supported as the users need to be authenticated against Active Directory by default which will not be available when SQLUM is used. Client side certificates cannot be authenticated against SQLUM as this feature is not implemented.