Let's Encrypt Certificates Archives - Geek is the Way!

Encrypting Zabbix Server communication with Agents using Let’s Encrypt certificates

Thiago Crepaldi — Sat, 31 Dec 2022 05:15:56 +0000

If you have deployed Zabbix Server on your Proxmox infra structure, you might be interested in hardening Zabbix installation with SSL certificates for the web frontend. You might also be interested in encrypting communication between Zabbix Server and the other Zabbix components, such as Agents and Proxies, after all, although it is just monitoring information,...

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Hardening Zabbix Server installation using Apache VirtualHosts and Let’s Encrypt certificates

Thiago Crepaldi — Sat, 31 Dec 2022 02:55:46 +0000

In my previous post, we went through the process of installing Zabbix Server on a Debian LXC container. Although it works alright, it doesn’t come with HTTPS support out of the box. It also has an “ugly” /zabbix in the end of the URL. In this short post, we are going through the steps of...

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How to fix the X3 CA/Certificate issue after upgrading to pfSense 2.5

Thiago Crepaldi — Fri, 26 Feb 2021 20:22:23 +0000

If you recently upgraded to pfSense 2.5, you may have received notifications about some CA/Certificate entries close to expiring. The exact message would be something like “The following CA/Certificate entries are expiring: Certificate Authority: Acmecert: O=Let’s Encrypt, CN=Let’s Encrypt Authority X3, C=US” The fix is quite simple, just visit System >> Cert Manager >> CAs...

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Install Let’s Encrypt SSL certificates on your Supermicro X10 from Synology on a schedule

Thiago Crepaldi — Tue, 16 Feb 2021 01:27:44 +0000

Recently I have added a Supermicro X10DRi-T4+ to my homelab and a natural idea was to install a Let’s Encrypt SSL certificate and replace the original self-signed one. For such, I had to adapt a couple python scripts [1] [2] first published by Jari Turkia. None of them worked for Supermicro X10DRi-T4+, but it wasn’t...

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Install Let’s Encrypt SSL certificates on your UDM-Pro from pfSense crontab

Thiago Crepaldi — Mon, 06 Jul 2020 03:20:26 +0000

As you may have noticed, your UDM Pro came with a self-signed certificate, which browsers don’t like much and neither do I. In this article, we are going to install Let’s Encrypt SSL certificates using crontab from a pfSense device. You can replace pfSense with any other device with crontab available. Unifi OS doesn’t provide...

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Setting up Let’s Encrypt SSL certificates on your pfSense

Thiago Crepaldi — Sat, 27 Jun 2020 22:38:09 +0000

In a previous post, I have described how to issue Let’s Encrypt certificates for free. SSL certificates have many applications, including replacing self-signed certificates that are not recognized by browsers. That is the goal of this post. Replace pfSense’s self-signed certificate by the one we have created using Let’s Encrypt API. Let’s Encrypt setup If...

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Issuing Let’s Encrypt certificates on your pfSense using ACME!

Thiago Crepaldi — Fri, 26 Jun 2020 01:53:00 +0000

If you are like me and don’t want unencrypted data flowing on your network or maybe even on Internet, than this post is for you! I will adopt CloudFlare DNS as it has API to integrate with Let’s Encrypt SSL services through the ACME plugin. Both CloudFlare and Let’s Encrypt are free, so that is...

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