nextcloud has some security warnings in a default installation
When checking the status of a nextcloud installation, the following warnings show up.
* The reverse proxy header configuration is incorrect, or you are accessing Nextcloud from a trusted proxy. If not, this is a security issue and can allow an attacker to spoof their IP address as visible to the Nextcloud. Further information can be found in the documentation. * The "X-Frame-Options" HTTP header is not set to "SAMEORIGIN". This is a potential security or privacy risk, as it is recommended to adjust this setting accordingly. * The "Strict-Transport-Security" HTTP header is not set to at least "15552000" seconds. For enhanced security, it is recommended to enable HSTS as described in the security tips ↗.
When doing a security scan, the default installation receives an A rating. By fixing these warnings, then it could be possible to receive an A+ rating by default.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information