Hi @Avyayah,
There is no need to connect to the Integration Services service. This feature is kept for backward compatibility with the obsolete SSIS 2005-2008.
For the reference:
This service is not required to create, save, and run Integration Services packages. SQL Server 2012 (11.x) supports the Integration Services service for backward compatibility with earlier releases of Integration Services.
You need to use SSIS Catalog and SSISDB instead. They are available starting from SSIS 2012 onwards. Please see below.