connection failure with solarwinds DBA showing the host of port is incorrect

showing me connection problem while trying to make connection with solarwinds Database Performance Analyzer.

Server (Name or IP)= Port = 1433 

  Authentication:  Sql Server Authentication

  SYSADMIN Login: tajamul


 Suggestions: Try the IP address instead of the server name; ping the database server from the DPA 
  machine using both name and IP to confirm availability; verify that the port is not blocked by a 
  firewall. Error Message: Invalid Host or Port [error=java.sql.SQLException: Network error IOException: Could not create socket]
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