Create and Apply SSL Certificate to TrueNAS Web UI @i12bretro
Create and Apply SSL Certificate to TrueNAS Web UI  @i12bretro
Uploaded August 2023 | Updated September 2026, 2 weeks ago
#TrueNAS #SSL #HTTPS

Full steps can be found at i12bretro.github.io/tutorials/0377.html

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Prerequisites
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   - A XCA PKI database  youtu.be/ezzj3x207lQ
 
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Create Your SSL Certificate
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   01. Launch XCA
   02. Open the PKI database if it is not already (File ≫ Open DataBase), enter password
   03. Click on the Certificates tab, right click on your Intermediate CA certificate
   04. Select New
   05. On the Source tab, make sure Use this Certificate for signing is selected
   06. Verify your Intermediate CA certificate is selected from the drop down
   07. Click the Subject tab
   08. Complete the Distinguished Name section
         internalName: nas.i12bretro.local
         countryName: US
         stateOrProvinceName: Virginia
         localityName: Northern
         organizationName: i12bretro
         organizationUnitName: i12bretro Certificate Authority
         commonName: nas.i12bretro.local
   09. Click the Generate a New Key button
   10. Enter a name and set the key size to at least 2048
   11. Click Create
   12. Click on the Extensions tab
   13. Select End Entity from the type list
   14. Click Edit next to Subject Alternative Name
   15. Add any DNS or IP addresses that the certificate will identify
   16. Update the validity dates to fit your needs
   17. Click the Key Usage tab
   18. Under Key Usage select Digital Signature, Key Encipherment
   19. Under Extended Key Usage select Web Server and Web Client Authentication
   20. Click the Netscape tab
   21. Select SSL Server
   22. Click OK to create the certificate
 
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Exporting Required Files
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   01. In XCA, click on the Certificates tab
   02. Right click the SSL certificate ≫ Export ≫ File
   03. Set the file name with a .crt extension and verify the export format is PEM (*.crt)
   04. Click OK
   05. Click the Private Keys tab
   06. Right click the private key generated for the SSL certificate ≫ Export ≫ File
   07. Set the file name with a .pk8 extension and verify the export format is PKCS #8 (*.pk8)
   08. Click OK
 
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Applying the Certificates
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   01. Open a web browser and log into the TrueNAS web UI
   02. Select Network ≫ Global Configuration
   03. Set the Hostname and Domain fields to match the certificate created
   04. Click the Save button at the bottom of the form
   05. Select System ≫ Certificates from the left navigation
   06. Click the Add button at the top right
   07. Click the Type dropdown and select Import Certificate
   08. Enter Web UI SSL in the Name field
   09. Open the .crt file exported earlier in Notepad, copy the contents to the Certificate data field
   10. Open the .key file exported earlier in Notepad, copy the contents to the Private key data field
   11. Scroll down to the bottom of the page and click Submit
   12. Select System ≫ General from the left navigation
   13. Select Web UI SSL from the GUI SSL Certificate dropdown
   14. Click the Save button at the bottom of the page
   15. Check the Confirm checkbox and click Continue to restart the web service
 


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Create and Apply SSL Certificate to TrueNAS Web UI

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