Enabling HTTPS on Synology DSM Using Let’s Encrypt Free SSL
Secure Sockets Layer (SSL) and its successor, Transport Layer Security (TLS), are crucial technologies that encrypt the data exchanged between a user’s web browser and a website’s server. By enabling HTTPS on your Synology DiskStation Manager (DSM) using the Let’s Encrypt Free SSL certificate, you can ensure that all communications are securely encrypted, providing enhanced security and data protection. In this comprehensive guide, we will walk you through the step-by-step process of enabling HTTPS on your Synology DSM.
Why Enable HTTPS?
HTTPS encrypts the data transmitted between a user’s browser and the website’s server, ensuring that sensitive information such as login credentials, personal details, and financial transactions are protected from eavesdroppers and hackers. By using HTTPS, you improve your website’s security, build trust with your visitors, and potentially boost your search engine rankings.
Benefits of Using HTTPS on Synology DSM
- Enhanced Security: Protect sensitive data and prevent unauthorized access.
- Improved Trust: Build credibility with your users by showing that their data is secure.
- SEO Advantage: Google favours websites with HTTPS, potentially boosting your search engine rankings.
Step-by-Step Guide to Enable HTTPS on Synology DSM Using Let’s Encrypt Free SSL
- Access Synology DSM: Log in to your Synology DSM using your admin credentials.
- Open Control Panel: Navigate to Control Panel.
- Go to Security: Click on Security under the Security section.
- Enable HTTPS: Tick the box next to ‘Enable HTTPS connection’.
- Request a Certificate: Click on ‘Configure’ next to the Certificate section.
- Select Let’s Encrypt: Choose Let’s Encrypt as the certificate provider.
- Configure Let’s Encrypt: Enter your domain name and email address for Let’s Encrypt registration.
- Apply the Certificate: Click on ‘Apply’ to generate and install the Let’s Encrypt SSL certificate.
- Verify HTTPS Connection: Test the HTTPS connection to ensure it is properly set up.
Potential Issues and Troubleshooting Tips
While enabling HTTPS on Synology DSM using Let’s Encrypt is relatively straightforward, you may encounter some issues during the setup process. Here are some common problems and troubleshooting tips:
- Certificate Renewal Failure: If the Let’s Encrypt certificate renewal fails, check your network settings and domain configuration.
- Mixed Content Warnings: Address mixed content warnings by ensuring all resources on your website are loaded securely over HTTPS.
- SSL Handshake Errors: Resolve SSL handshake errors by checking your SSL/TLS settings and ensuring compatibility with Let’s Encrypt.
Conclusion
Enabling HTTPS on your Synology DSM using the Let’s Encrypt Free SSL certificate is a critical step towards enhancing the security of your data and building trust with your users. Follow the step-by-step guide provided in this article to secure your Synology DSM with HTTPS and enjoy the benefits of encrypted communication. By prioritising security and data protection, you can create a safer online environment for yourself and your visitors.

DrayTek Vigor 2962 2.5Gb Ethernet Dual-WAN Broadband Firewall Router, 200 VPN Tunnels, 20 VLANS, QOS, Remote Management, Load Balancing
High Performance Multi-WAN Router - The Vigor 2962 makes full use of FTTP Fibre Broadband at up to 2.2Gbps throughput for single or multi-WAN configurations. With Quality of Service, Firewall and Content Filtering.
Buy Now on Amazon
NETGEAR Orbi Mesh WiFi 6 System (RBK763S) , Mesh Router & 2 Extenders , Cover Every Room, Up To 6,000 Sq Ft , Improve WiFi Speeds up to 5.4 Gbps & 75 devices , Simple App Set Up
WiFI mesh coverage of up to 6,000 sq ft and up to 75 devices, With each satellite (sold separately) you can extend the range by up to 2,000 sq ft
Buy Now on Amazon
DrayTek Vigor 2865Lax-5G Ethernet Router, WiFi 6 AX3000 Wireless and 5G Failover, Integrated 5G Modem, 5+1 GbE LAN Ports with VLANs, VDSL
VDSL and Ethernet Load Balancer - Connect the Vigor 2865 to Superfast Fibre with the integrated VDSL modem. Use the Ethernet WAN with Cable and Ultrafast FTTP. Load Balance multiple connections to boost performance.
Buy Now on Amazon
TP-Link Archer BE550 Router WiFi 7 BE9300Mbps, Tri-Band WiFi Router, 2.5G Ports,USB Port,Maximized Coverage,VPN Router, Parental Control, HomeShield Security, Private IoT Network,Easy Setup,EasyMesh
Wi-Fi 7 Routers: With powerful Wi-Fi 7 performance, lightning-fast wired connections, and brand-new design
Buy Now on Amazon
QNAP TS-253A-4G 2 Bay NAS Enclosure with 4GB RAM - Black (GDPR Compliant)
NAS and iSCSI-SAN unified storage solution for server virtualization
Buy Now on Amazon
WD 16TB My Cloud EX2 Ultra 2-bay NAS - Network Attached Storage RAID, file sync, streaming, media server, with WD Red drives
Centralised network storage: Organise your entire media collection, photos and files in one central, network location
Buy Now on Amazon
Synology DX517 5 Bay Desktop Network Attached Storage Expansion Enclosure, Black
Online volume expansion
Buy Now on Amazon
QNAP TS-431XeU-8G 4 Bay Short-depth Rackmount NAS Enclosure with 10GbE SFP+ & 8GB RAM
The short depth design is suitable for installing in smaller racks or space-constrained locations
Buy Now on Amazon
Seagate 10 TB IronWolf NAS 3.5 Inch Hard Drive ST10000VN0008 (SATA 6 Gb/s/256 MB/7200 RPM)
Model Number: ST10000VN0008
Buy Now on Amazon
QNAP TS-673A-8G 6 Bay Desktop NAS Enclosure - 8GB RAM, AMD Ryzen Quad-core 2.2 GHz Processor - with 2.5GbE connectivity & supporting PCIe expansion
8GB DDR4 RAM (2 x SODIMM slots, max. 64GB, optional ECC RAM support)
Buy Now on Amazon
Synology DS1621+ 48TB 6 Bay Desktop NAS Solution, installed with 6 x 8TB Western Digital Red Plus Drives
Accelerated Performance: 174% higher 4K random read IOPS and 76% faster sequential write speeds compared to its predecessor
Buy Now on Amazon
Synology DS1823xs+ 8 Bay NAS Desktop: High-Performance Storage Solution
Powerful Performance - Over 3,100/2,600 MB/s sequential read/write throughput and over 173,100/80,800 random read/write IOPS2 support heavier applications
Buy Now on Amazon