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:
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
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: