Setting up webserver Raspberry Pi OSMC


I recently bought a Raspberry Pi and I’m having a blast using OSMC.
Through OSMC I installed Transmission and the samba server, and now I’m trying to set up my website to access this two things while I’m away. I’ve already got the apache server up and running, my question relies on how I would redirect from the website to the transmission interface for example.
I’ve been using raspberry pi ip:9091 to access the interface, but I don’t want people to access it without a password!

If there’s a way to this without going through a website I’m open to new ideas

Thank you!