This is not something new but i got to work on SAP system in my recent assignment where i wanted to access SAP system URL from SAP mobile platform. Here is my finding on this:
Prerequisite: You must be having SAP GUI Logon pad.
1. Login to desired SAP system with valid credentials
2. Run SICF transaction
3. Execute or press F8
4. Expand default_host
5. look for ping under sap>bc
6. Right click > Test Service
Choose Allow this one time from the drop down
7. It will open in browser, asking for SAP system user id and password
After giving right credentials, you will see below message
URL would like below
I hope this sharing would be helpful. Your comments and suggestions are most welcome.