Tutorial: Let's Encrypt certificates on DSM 6.1.X (change API from v01 to v02)

[jensmander 157]

Since Let's Encrypt changed their API from v01 to v02 it isn't possible to request certificates when using DSM 6.1.X.

 

Workaround: exchange the syno-letsencrypt module with a version from a DSM 6.2.X release.

 

Preparations:

 

• enable SSH access on your box
• download this file (from an original DS920+, DSM 6.2.3-25426 Update 3), extract it and copy it to a shared folder of your NAS: https://mega.nz/file/889yCJ5S#Y3UtxPe_qQfRkpxQeALzsFEAIx_NDxLVx2FPLu9HT_I

 

1. After you have downloaded the file mentioned open a SSH connection to your NAS
2. Backup your current syno-letsencrypt module by
    

   sudo cp /usr/syno/sbin/syno-letsencrypt usr/syno/sbin/syno-letsencrypt.bak

   
    
3. Copy the new syno-letsencrypt from your shared folder (for example: volume1/Downloads) to the sbin folder:
    

   sudo cp /volume1/Downloads/syno-letsencrypt /usr/syno/sbin/

   
    
4. Modify the file to execute it:
    

   sudo chmod 755 /usr/syno/sbin/syno-letsencrypt

5. Open the letsencrypt.default with vi and modify it:
    

   sudo vi /usr/syno/etc.defaults/letsencrypt/letsencrypt.default

6. Search for the string "https://acme-v01.api.letsencrypt.org/directory"
    
7. Press "i" and change the 01 to 02 in this string (should be "https://acme-v02.api.letsencrypt.org/directory")
    
8. To save and exit, press ESC, type :wq (ENTER)
    
9. Reboot your NAS and Let's Encrypt should work again

[Zarros 0]

Thank you very much, it works ! 

Edited December 29, 2020 by Zarros