How to Install Lets Encrypt Certificate On OPNsense Using ACME Client @Liv4IT
How to Install Lets Encrypt Certificate On OPNsense Using ACME Client  @Liv4IT
Uploaded April 2025 | Updated September 2026, 2 weeks ago
How to Install Let's Encrypt Certificate On OPNsense Using ACME Client

๐Ÿ”น In this video, you'll learn how to install and configure a Let's Encrypt SSL certificate on OPNsense using the ACME Client plugin. This ensures secure HTTPS access to your firewall, VPN, and other internal servicesโ€”without paying for an expensive SSL certificate!

Let's Encrypt provides FREE SSL certificates that automatically renew, making it a great choice for securing your OPNsense web interface and other services. This tutorial will guide you through installing, setting up validation, and applying the certificate for a fully secure setup.

๐Ÿ›  What You'll Learn in This Tutorial
โœ”๏ธ How to install the ACME Client plugin in OPNsense
โœ”๏ธ Configuring Let's Encrypt DNS API or HTTP validation
โœ”๏ธ Generating and applying SSL certificates to OPNsense
โœ”๏ธ Automating certificate renewal for hassle-free security
โœ”๏ธ Troubleshooting common ACME client issues

๐Ÿ”Ž Why Use Let's Encrypt SSL Certificates on OPNsense?
โœ… Free & Trusted โ€“ No cost, fully recognized by browsers
โœ… Secure Firewall Access โ€“ Prevents browser warnings
โœ… Automatic Renewal โ€“ No manual certificate updates needed
โœ… Supports Internal & Public Services โ€“ Works for VPNs, WebGUI, and hosted services
โœ… Compatible with Reverse Proxies โ€“ Secure HAProxy, Nginx, and more

โšก Requirements
๐Ÿ”น OPNsense Firewall (Latest Version)
๐Ÿ”น Internet Access for Let's Encrypt API
๐Ÿ”น A Public or Dynamic DNS Domain (e.g., Cloudflare, DuckDNS)
๐Ÿ”น Admin Access to Your OPNsense WebGUI

๐Ÿ”— Useful Links & Resources
๐Ÿ“– OPNsense Documentation: docs.opnsense.org
๐Ÿ”— Letโ€™s Encrypt Official Website: letsencrypt.org
๐Ÿ’ก ACME Plugin Setup Guide: github.com/acmesh-official/acme.sh









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#OPNsense #LetsEncrypt #SSL #ACMEClient #CyberSecurity #SelfHosting #Firewall #Networking #HTTPS
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How to Install Let's Encrypt Certificate On OPNsense Using ACME Client

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