Enabling Read-Only DMG Sharing on Synology NAS for SMB: A Tech Support Guide

Enabling Read-Only DMG Sharing on Synology NAS: A Comprehensive Tech Support Guide

In today's world of digital data, sharing files and folders securely has become paramount. One solution for secure file sharing is to create encrypted .dmg files on macOS and share them over a network. This article will guide you through the process of creating and sharing read-only encrypted .dmg files on a Synology NAS using SMB shares.

Prerequisites

• A Synology NAS with the latest DiskStation Manager (DSM) version
• A macOS device with Disk Utility installed
• An SMB share on the Synology NAS
• Full read/write permissions for the SMB share

Creating Encrypted DMG Files with Read-Only Permissions

The following steps demonstrate how to create a read-only encrypted .dmg file on a macOS device:

1. Launch Disk Utility on the macOS device.
2. Click on File > New Image > Blank Image in the menu bar.
3. In the new image window, specify a name for the .dmg file, and set the size based on your requirements in the Size field.
4. Set the Format field to macOS Extended (Journaled, Encrypted).
5. In the Encryption dropdown menu, select 128-bit AES-XTS.
6. Enter a secure password in the Password and Verify fields.
7. Select the Read-only option under the Format section.
8. Click on the Save button to create the encrypted .dmg file with read-only permissions.

Sharing DMG Files on Synology NAS using SMB Shares

Once you have created the encrypted .dmg file with read-only permissions, you can share it on the Synology NAS using SMB shares:

1. Copy the encrypted .dmg file to the SMB share folder on the Synology NAS.
2. Log in to the Synology NAS as an administrator.
3. Navigate to the Control Panel > Shared Folder.
4. Select the SMB share folder from the list and click on the Edit button.
5. Under the Permission section, make sure the user has Read/Write permissions for the SMB share folder.
6. Click on the OK button to save the changes.

Accessing DMG Files on Synology NAS Shares

To access the encrypted .dmg file from another device:

1. Mount the SMB share on the device.
2. Launch Disk Utility on the device.
3. Click on File > Open Disk Image in the menu bar.
4. Select the encrypted .dmg file from the SMB share.
5. Enter the password to mount the encrypted .dmg file.

References

• Mac Basics: A Beginner's Guide to Mac OS X. Peachpit Press, 2016.

• How to create a shared folder

• How to encrypt a disk using Disk Utility on Mac

This article provided a detailed guide on enabling read-only DMG sharing on Synology NAS using SMB shares. By following the steps outlined in this article, you'll be able to create and share encrypted read-only DMG files securely on your Synology NAS.