Attached is steps to implement SSL. Now, Accesspoint is basically a webpage so adding SSL is a extra security layer, in other words, yes it is safe.
QlikViewAndIIS (3).docx 3.2 MB
SSL is secure and there are different levels of SSL. I would make sure the Provider of you SSL certificate has a reputation for security. VeriSign is a great one, but the cost can be very high.
The installation and setup using IIS is very easy and your IT team shouldn't have any issue doing it.