I know it's possible to turn off external sharing for a site collection but was wondering if it was possible to turn it off on site and subsite level? Thank you!
There are settings at site level to set these option. I haven`t tested but as per documentation you can follow the steps.
- Site Settings
- Site Permissions
- Access Request Settings
- Uncheck "Allow members to share the site and individual files and folders." option.
- Save changes.
Try, it might work.