When sharing with users, groups, circles or members of a Talk conversation, rights for the files or folder contents are adjustable:
As a sharee, you can configure if you automatically want to accept all incoming shares and have them added to your root folder, or if you
want to be asked each time if you want to accept or decline the share.
For adjusting the acceptance setting, go to Settings > Personal > Sharing:
In order to find out if a file or folder is accessible to others through sharing of a superior folder
hierarchy level, click on Others with access in the sharing tab:
The list shows all users, groups, chats etc. that the current object has been given access to through
sharing of a superior folder in the hierarchy:
Click on the three dots to:
see who initiated the share
see where the share was initiated (click to navigate to the folder, as far as you have access there)
unshare the initial share (only accessible for the share owner)
Note
This information is only visible to the owner of a file/folder or sharees with resharing rights.
Federation Sharing allows you to mount file shares from remote Nextcloud servers, in effect
creating your own cloud of Nextclouds. You can create direct share links with
users on other Nextcloud servers.
Federation sharing is enabled by default. Follow these steps to create a new share with other Nextcloud or ownCloud servers:
Go to your Files page and click the Share icon on the file or directory
you want to share. In the sidebar enter the username and URL of the remote user
in this form: <username>@<nc-server-url>. In this example, that is
bob@cloud.example.com:
The sharee is receiving a notification in their Nextcloud, allowing them to either accept or decline the incoming share:
Nextcloud public link share pages offer an option to add that file or folder as a federated share into your own Nextcloud instance.
Just enter your <username>@<nc-server-url> just like shown for outbound shares above: