To restrict file sharing in Samba to particular users or network addresses, you can use the valid users and hosts allow parameters in the smb.conf configuration file.
The valid users parameter specifies a list of users that are allowed access to a Samba share. The hosts allow parameter specifies a list of hosts that are allowed access to a Samba share. You can use these parameters together to restrict access to a Samba share to particular users or network addresses.
For example, to restrict access to a Samba share named share to the user user1 and the host 192.168.1.100, you can use the following configuration in the smb.conf file:
[share]
valid users = user1
hosts allow = 192.168.1.100
Save the file and restart the Samba service for the changes to take effect.
By using the valid users and hosts allow parameters, you can restrict file sharing in Samba to particular users or network addresses. It's always a good idea to carefully review the documentation and use the appropriate options and settings when working with Samba. This will help ensure that your Samba configuration is set up correctly and that any problems are detected and addressed.