I think the only way to do that currently would be to access it over tor. When he next major StartOS update comes out you should be able to access things over clearnet.
So far, I’ve migrated my data from OneDrive to NextCloud on my nostr:nprofile1qqs9df4h2deu3aae83fmet5xmrlm4w5l9gdnsy3q2n7dklem7ezmwfcpg3mhxw309umxcetgdpukgumjw35xzemdd9envat4xe682cmwv3m85aehvd6kyur3dd58v7re0ymk5mmfda3ngdtdddehydr9v9jzummwd9hkutcpzamhxue69uhhyetvv9ujumn0wd68ytnfdenx7tcp6rkvp and I like the functionality at home — the files are synced and accessible on my laptop, desktop, and phone.
Now my question is: Is it possible to access the data when I’m not on my local network? That’s the missing piece right now to get it to really feel the same. #asknostr
Discussion
Yeah I saw the tor address. I was hoping for something more slick. It would’ve been nice to be able to enter the tor address in the NextCloud app and configure it as another connection. 
Tor is the way 🧅 nostr:nprofile1qqs9df4h2deu3aae83fmet5xmrlm4w5l9gdnsy3q2n7dklem7ezmwfcpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsz3rhwvaz7tekd3jks6rev3ehyargv9nk66tnxe6h2dn5w43kuerk0fmnwcm4vfc8z6mgweu8j7fhdfhkjmmrxs6k66mnwg6x2cty9ehku6t0dchsz9mhwden5te0wfjkccte9ehx7um5wghxjmnxduhs5nd6j2 har good guides 👉 https://docs.start9.com/0.3.5.x/user-manual/connecting-tor.html#using-native-apps