Duplicati Encrypted Backup on Ubuntu 24.04 | 24/7 Support by cloudimg

Duplicati is free, open source backup software with a modern web interface. It makes secure, space efficient backups: your files are compressed, encrypted with AES-256 on the machine before they are uploaded, and deduplicated so that only the blocks that changed are stored on each run. Backups can be sent to a local folder, a network share or a wide range of cloud storage providers, and the scheduler, retention rules, backup jobs and a file by file restore browser are all driven from the web UI. Because encryption happens before upload, the storage destination only ever sees encrypted blocks.

The cloudimg image installs the pinned Duplicati 2.3.0.4 stable release and runs its server under systemd. The Duplicati server binds only to loopback and is fronted by nginx, which terminates HTTPS on port 443 with a per-VM self-signed certificate; port 80 redirects to HTTPS. The web UI and REST API require a password generated uniquely on the first boot of every VM, and the server configuration database is encrypted with a per-VM key so the destination credentials and passphrases you store are protected at rest. An unauthenticated /healthz endpoint is provided for Azure Load Balancer probes, and the duplicati-cli tool ships for scripted backups and restores. Backed by 24/7 cloudimg support.

Licensing - MIT, FREE. The self-hosted Duplicati core is MIT licensed with no per-seat or per-gigabyte fee. The cloudimg charge (0.04 USD per vCPU/hour) covers packaging, security patching, image maintenance and 24/7 expert support.