I am trying to read data into data frame of data Bricks from on Prem SQL server but facing 
com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host HYDNB875, port 1433 has failed. Error: "HYDNB875. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall.".

I have all the set up later this also showing blank screen, port is listening
telnet <your_sql_server_ip> 1433