Connect to oracle 11 on a corporate network via oracle developer 17
EDBDEV is a TNS alias.

If you search for a file called tnsnames.ora, that should contain an entry similar to below:

EDBDEV =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = edbdev.mycompany.com)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = EDBDEV)
    )
  )


Based on that, you can fill in the required connection details.