After changing addresses:
mount error(13): Permission denied
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
NAS Synology :
DiskStation> cat /etc/exports
/volume1/Video *(rw,async,no_wdelay,crossmnt,insecure,no_root_squash,sec=sys,anonuid=1025,anongid=100)
/volume1/Backup *(rw,async,no_wdelay,crossmnt,insecure,no_root_squash,sec=sys,anonuid=1025,anongid=100)
/volume1/games *(rw,async,no_wdelay,crossmnt,insecure,no_root_squash,sec=sys,anonuid=1025,anongid=100)
Thank you for your help.