I have installed a firewall-backend now and set samba permanent to allow. But in Nautilus it doesn´t work.
Also your command does not show the NAS on Fritz.box. I always get
mount error(22): Invalid argument
I tried it with: // and …
I never had any problems to connect my NAS on Fritz.Box in Nautilus with other Distributions.
One step closer! I found this article and added
client min protocol = NT1
in file smb.conf
After the login dialog now I can see the content of the drive but cannot open it: “File not found”
On my other computer (Pop OS) there is no problem with this files.
I noticed the only installed packages refering to samba on Pop OS are libwbclient0 and samba-libs.
No samba, samba-common, …