I recently migrated from Windows to Ubuntu (KDE).

The problem:
I own a Synology NAS which I ca'n login to like I did on Windows. To get to the admin I accessed https://somename:5001 with a browser, but in Ubuntu that page doesn't exist. In windows I'm in default "WORKGROUP" same as defined in samba config under Ubuntu. I don't have a certificate so I turned that off, so I could access it via http://somename:5000 but no luck. Anyone had similar experience? Maybe I need to configure that 5001 and 5000 port in Ubuntu (if, yes => how)?

The Question:
How I can mount shared drives on that NAS?? I can access them with Samba but there I have limitations like I can't play video from it. Probably I need to turn on SSH acces on NAS and mount drives or something similar?