SMB access denied with VPNs

Buongiorno,
I continue to not solve this problem.
now I’m on the remote site.

I installed a second nethserver, with a vpn tunnel I published the 2 net directly
1.x with samba services
and 18.x the network that must access remotely
(i remove completly alias 12.x)

the folders without authentication navigate, those protected no, keep asking me for the password.

I’m looking at all the logs

message / firewall / log.smb
but I find nothing.

Where should I look? do you have some advice?
Thanks

in prompt i have run

net use * /delete

and retry connection

192.168.18.130 my pc
192.168.1.241 samba server