SYNCTHING – Secure data synchronization between devices

File synchronization has become essential for keeping our data updated and accessible across multiple devices. However, many popular file synchronization solutions raise concerns about privacy and security, as data is often stored on centralized servers that could be compromised.

From confidential documents to family photos, our digital lives are constantly at risk due to cyberattacks, data breaches, and questionable data handling practices by some platforms. In this context, finding solutions that combine practicality, security, and full control over our data is more relevant than ever.

Syncthing is a secure, open-source file synchronization program that allows you to maintain full control over your data. Unlike centralized services, Syncthing uses a P2P architecture, which means your files are synchronized directly between your devices without passing through a central server.

How does it differ from other solutions like Dropbox or Google Drive?

Syncthing fundamentally differs from services like Google Drive or Dropbox in its focus on privacy, data control, and its decentralized architecture. While Google Drive and Dropbox use centralized servers to store and synchronize files, Syncthing operates on a peer-to-peer (P2P) model. This means data is not stored on external servers; instead, it is synchronized directly between the user’s devices. This eliminates the risk of third parties accessing the information, whether through security breaches or internal policies of centralized platforms.

Another key difference lies in control and transparency. Syncthing is open-source, allowing users to inspect the software, audit its security, and contribute to its development. In contrast, platforms like Google Drive and Dropbox operate with proprietary software, where users must blindly trust their data handling practices. Furthermore, Syncthing does not require subscriptions or limited cloud storage, as it uses the resources of the user’s devices, making it a more sustainable and cost-effective option in the long term.

Why is Syncthing secure?

• Private: Your data is never stored anywhere other than your computers. There is no central server that could be compromised.
  
  
• Encrypted: All communication is secured with TLS to prevent any intruders from accessing your data.
  
  
• Authenticated: Each device is identified using a strong cryptographic certificate. Only devices you have explicitly allowed can connect.

What does TLS do?

TLS (Transport Layer Security) is a security protocol used to protect communication over networks, especially on the Internet. Its main purpose is to ensure that data transmitted between two parties, such as a user and a server, is secure and cannot be intercepted or modified by third parties.

• Encryption: TLS encrypts the data sent between devices, ensuring that even if someone intercepts it, they cannot read it without the correct key.
  
  
• Authentication: It verifies that the parties communicating are who they claim to be, using digital certificates.
  
  
• Integrity: It ensures that data is not altered during transmission.

Why is it important in Syncthing?

In Syncthing, TLS is used to protect connections between devices. This means that when files are synchronized, the communication is encrypted and secure, even if it passes through unreliable networks, such as public Wi-Fi. Additionally, Syncthing implements “Perfect Forward Secrecy,” which adds another layer of security: even if someone obtained the current encryption keys, they would not be able to decrypt past communications.

TLS is a standard technology that also protects things like online transactions and website access via HTTPS, highlighting its reliability and security.

Is Syncthing Open-Source?

Yes, Syncthing is completely open-source, which means the source code is available for anyone to inspect and audit. This ensures transparency and trust in the platform.

• Open protocol: The protocol specification is documented.
• Open source code: Available on GitHub.
• Open development: Any bugs found are visible to all.
• Open discourse: Development and usage are open for discussion.

Is it easy to use?

Despite its advanced security features, Syncthing is designed to be easy to use. You do not need advanced technical knowledge to set it up and use it.

• Powerful: Sync as many folders as you need.
• Portable: Works across multiple operating systems and can be controlled from a web browser.
• Simple: No need for IP addresses or advanced configuration; works via LAN and the Internet.

Frequently Asked Questions

Do I need an account to use Syncthing?
No, you do not need an account. Each device is identified with a unique ID that you can share to connect them.

Can I use Syncthing for backups?
Yes, you can synchronize your important files with another computer or server.

Is commercial support available?
Yes, Kastelo provides commercial support and sponsors the development of Syncthing.

I encourage you to try it

Syncthing is a powerful, secure, private, and easy-to-use file synchronization solution. By using a P2P model and strong encryption, it ensures that your data remains under your control at all times. Its open-source nature promotes transparency and trust in the platform, making it an excellent alternative to centralized file synchronization solutions.

For more information about Syncthing, visit the official website: https://syncthing.net/. You can also check the security page for detailed information and contact info: https://syncthing.net/security/.