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Caddy Web Server on Ubuntu 24.04 LTS

Caddy is a modern web server and reverse proxy with automatic HTTPS: point a domain at it and it obtains and renews certificates by itself. This image gives you a production-ready deployment within minutes of first boot — no dependency wrangling, no manual hardening checklist. Published and maintained by Derek Coleman & Associates Inc: freshly rebuilt against current security advisories and deployable straight from the Azure Marketplace into your own subscription.

Get it on Azure Marketplace Deploy on Azure Support & quick start

Version: Caddy 2.11.4 (official Caddy apt repository)Platform: Ubuntu 24.04 LTSPorts: 80 (HTTP, default site); 443 once you give Caddy a domain (automatic HTTPS)Category: Web & Proxy

What's included

Caddy installed from the official upstream source
Ubuntu 24.04 LTS base with automatic security updates enabled
No shared or default passwords baked into the image
Trusted Launch support: Secure Boot + vTPM
Azure Monitor Agent, Defender for Cloud, and Update Manager install cleanly

Quick start

Deploy from the Azure Marketplace (Get It Now → Create), choosing your SSH key at the Administration step.
Allow inbound SSH (22) for yourself plus the application port(s) in the Network Security Group (NSG): 80 and 443 (HTTP/S) — restrict to your own IP where possible. The VM's own firewall (ufw) is installed but NOT enabled on this image, so the NSG is the only filter in front of the VM.
Browse to http://<VM-IP>/ — Caddy answers immediately with the default site.
Set your domain and routes in /etc/caddy/Caddyfile and reload — automatic HTTPS needs DNS pointing at the VM and 80/443 open.

Common use cases

Static sites with automatic HTTPS
Reverse proxy in front of application containers
Zero-config TLS for internal tools
Simple, declarative web serving

Why our images

Freshly rebuilt against the latest security advisories, no shared default credentials, Trusted Launch support, and automatic OS security updates — everything runs in your own Azure subscription under your governance.

Need help?

Product support page
support@dcassociatesgroup.com
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