Hi everybody
I guess everything is even much easier - if you once figured it out. Have a look at my latest blog post here: http://wp.me/p2nNXm-2Y
The key is that you configure a vanity URL for the HANA server in your Cloudshare account. Afterwards the server has its own public URL / hostname on <yourname>.vm.cld.sr
On this hostname even port 30015 seems to be open. At least I could connect from a different Cloudshare environment with BO 4.0 installed.
Best regards
Raphael