--- title: Installing a Let's Encrypt TLS certificate on a Brother... description: A step-by-step guide to automatically deploying a Let's Encrypt TLS certificate to a Brother printer using a Bash script, Certbot with the Cloudflare DNS... canonical: https://daily.dev/posts/installing-a-let-s-encrypt-tls-certificate-on-a-brother-printer-automatically-with-certbot-cloudf-l2yvhwi6b twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Installing a Let's Encrypt TLS certificate on a Brother printer automatically with Certbot (& Cloudflare) | daily.dev og:description: A step-by-step guide to automatically deploying a Let's Encrypt TLS certificate to a Brother printer using a Bash script, Certbot with the Cloudflare DNS... og:url: https://daily.dev/posts/installing-a-let-s-encrypt-tls-certificate-on-a-brother-printer-automatically-with-certbot-cloudf-l2yvhwi6b og:image: https://api.daily.dev/og/posts/L2yvHwI6B.png og:image:alt: Installing a Let's Encrypt TLS certificate on a Brother printer automatically with Certbot (& Cloudflare) og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Installing a Let's Encrypt TLS certificate on a Brother printer automatically with Certbot (& Cloudflare) **[Hacker News](https://daily.dev/sources/hn)** · 11 min read · 0 upvotes · 0 comments ## Summary A step-by-step guide to automatically deploying a Let's Encrypt TLS certificate to a Brother printer using a Bash script, Certbot with the Cloudflare DNS plugin, and the open-source Brother Cert tool. The setup runs on macOS with Cronicle as the scheduler. Key considerations include using RSA-2048 keys (required by Brother printers), handling HTTP fallback when the printer has an expired certificate, and separating credentials into isolated .ini files. The script handles certificate acquisition via DNS-01 challenge, copies PEM files to a staging location, converts them to PKCS#12 format, uploads to the printer, and triggers a reboot. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [How To Secure Apache with Let's Encrypt on Ubuntu](https://daily.dev/posts/how-to-secure-apache-with-let-s-encrypt-on-ubuntu-ez7xc9rbs) · DigitalOcean Community · 0 upvotes · 0 comments - [How to automate SSL Certificates and HTTPS Renewals](https://daily.dev/posts/how-to-automate-ssl-certificates-and-https-renewals-nxzlih7w1) · DigitalOcean Community · 0 upvotes · 0 comments - [How to Issue Let's Encrypt Wildcard Certificates with Certbot](https://daily.dev/posts/how-to-issue-let-s-encrypt-wildcard-certificates-with-certbot-qalki0nog) · DigitalOcean Community · 1 upvotes · 0 comments --- Tags: [#cloudflare](https://daily.dev/tags/cloudflare), [#bash](https://daily.dev/tags/bash) [View this post on daily.dev](https://daily.dev/posts/installing-a-let-s-encrypt-tls-certificate-on-a-brother-printer-automatically-with-certbot-cloudf-l2yvhwi6b) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Installing a Let's Encrypt TLS certificate on a Brother printer automatically with Certbot (& Cloudflare)","url":"https://daily.dev/posts/installing-a-let-s-encrypt-tls-certificate-on-a-brother-printer-automatically-with-certbot-cloudf-l2yvhwi6b","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/installing-a-let-s-encrypt-tls-certificate-on-a-brother-printer-automatically-with-certbot-cloudf-l2yvhwi6b"},"datePublished":"2026-03-27T17:37:15.416Z","dateModified":"2026-03-27T17:37:40.080Z","description":"A step-by-step guide to automatically deploying a Let's Encrypt TLS certificate to a Brother printer using a Bash script, Certbot with the Cloudflare DNS...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b28d8e30bc66270dde644e96b00c2318?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b28d8e30bc66270dde644e96b00c2318?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Hacker News","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Hacker News","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/hn","url":"https://daily.dev/sources/hn"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/installing-a-let-s-encrypt-tls-certificate-on-a-brother-printer-automatically-with-certbot-cloudf-l2yvhwi6b","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"cloudflare,bash","timeRequired":"PT11M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hacker News","item":"https://daily.dev/sources/hn"},{"@type":"ListItem","position":3,"name":"Installing a Let's Encrypt TLS certificate on a Brother printer automatically with Certbot (& Cloudflare)"}]} ```