I've already tried , se my first post: "I already used the option vers=1.0 with sec=none / sec=ntlm and so on."
root@NAS-OTHMAN:~# mount -t cifs -o guest,sec=ntlm,vers=1.0 //192.168.0.3/NAS-Backup /mnt/share/
root@NAS-OTHMAN:~# mount -t cifs -o guest,sec=none,vers=1.0 //192.168.0.3/nas-backup /mnt/share/
root@NAS-OTHMAN:~# mount -t cifs -o sec=none,vers=1.0 //192.168.0.3/nas-backup /mnt/share/
All these commands gives the same output:
mount error(5): Input/output error
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
root@NAS-OTHMAN:~# ping 192.168.0.3
PING 192.168.0.3 (192.168.0.3) 56(84) bytes of data.
64 bytes from 192.168.0.3: icmp_seq=1 ttl=32 time=0.229 ms
64 bytes from 192.168.0.3: icmp_seq=2 ttl=32 time=0.161 ms
64 bytes from 192.168.0.3: icmp_seq=3 ttl=32 time=0.212 ms
root@NAS-OTHMAN:~# smbclient -L 192.168.0.3
Enter WORKGROUP\root's password:{Here I just hit Enter. without entering a password}
Sharename Type Comment
--------- ---- -------
NAS-BACKUP Disk
IPC$ IPC
Reconnecting with SMB1 for workgroup listing.
Server Comment
--------- -------
Workgroup Master
--------- -------
root@NAS-OTHMAN:~# sudo nano /etc/samba/smb.conf -- (I tried with different config settings, below is how it is now):
[global]
workgroup = WORKGROUP
client ipc signing = auto
client max protocol = NT1
guest only = yes
guest ok = yes
guest account = nobody
public = yes
------
Everithing what comes below in the config file, is default.
it's so frustrated!