Certification SSL SAP HANA

I have the following question, my network admin runs a SAP Hana express VM on the internal network. I am connected to it through PuTTy with a specific Ip address. But trying to establish SSL connection so HTTPS is not possible without the certification. I imported the Certification from IE but although it didn’t work. How should I import this certification and does it need anything to be done in the DNS. I do not have that experience with Certificates .

Thank you