November Rx/Tx


Let's Encrypt HTTPS with acme-client on OpenBSD

Introduction

Since OpenBSD 5.9, the base system comes with acme-client: an open source implementation in C that requests a free HTTPS/TLS certificate from the Let’s Encrypt Certificate Authority. It is really simple to setup and even easier to use. And once your certificate is issued, a cronjob will ensure your website stays TLS encrypted for the remainder of its lifetime.

ACME Setup

Open the file /etc/acme-client.conf in your favourite editor and ensure both instances of the agreement url contain the most up-to-date link. Then …

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