Fortigate SSLWeb: accessing subfolders fail thru nextcloud web

ℹ️ Support
1

Hello
we are accessing nextcloud web interface thru fortigate ssl web vpn page, everything works well except cannot access subfolders,
when i check subfolder url is duplicate like below;

https://xxx.xxx.xxx/proxy/51bba872/https/cloud.yyy.yyy/index.php/apps/files?dir=https%3A//cloud.yyy.yyy/remote.php/dav/files/nextcloud/Photos

any ideas?

2

We have exactly the same Problem: FortiGate 200E v6.2.3, NextCloud 18.0.3

Any Ideas?

3

We also have the same problem. Has anyone found a solution?

Nextcloud is generating WebDAV links (/remote.php/dav/…) in the webclient links (/files.php/…/files?dir=…) when accessing Nextcloud through the Fortigate SSL Webproxy (as per the example url posted by OP) instead of normal webclient links directly to the file or folder.

Additionnal information: we have added the Fortigate SSLWeb url (xxx.xxx.xxx as per OP example url) in trusted_domains and its IP to trusted_proxies.

Thanks