Introduction This document provides instructions for performing network bandwidth tests using iperf3 on FreeBSD or Linux systems with 1Gbps interfaces. iperf3 is a powerful tool for measuring network performance, including […]
Network Bandwidth Testing with Iperf3 Read More »
Postfix is one of the most common email servers in the world due to it’s performance, easy setup and configuration. Postfix supports TLS 1.2 as of version 2.6 and TLS
Disabling TLS 1.0 and 1.1 in Postfix Read More »
If you have users accessing mail on your system, then you probably have Dovecot running. It is one of the best POP and IMAP servers (IMHO). It is easy to
Disabling TLS 1.0 and 1.1 in Dovecot Read More »
The Raspberry Pi has a few temperature sensors built in. One of the most important is in the GPU. This is because the Raspberry Pi will start throttling back it’s
Checking the Raspberry Pi CPU or GPU Temperature Read More »
Is your system running out of disk space and you don’t know where it all went. It might be systemd. Systemd creates Journal Logs that can add up quickly. Here
Clear Systemd Journal Logs Read More »
FreeBSD has always been my OS of choice but in the past I have always viewed upgrades as one point of failure. What if the upgrade doesn’t go as expected,
FreeBSD Upgrades with ZFS boot environments Read More »
I have a web application running on Apache 2.4 that I would like to be password protected for everyone except for my local network. If someone access it from my
Apache: Different authentication requirements Read More »
At times we have to collect the last 7 or 15 days of data from MySQL. For example to create graphs or stats for the past x amount of days or
MySQL: Working with Date Ranges Read More »
Change block tracking allow tools to track what blocks in a virtual drive have changed over a period of time. This is very useful for backup software as it is
VMware: Enable Change Block Tracking (CBT) Read More »
I currently run Octoprint on a Raspberry Pi that is hooked up to be 3D printer. This setup uses HAProxy to provider the web front end for the user. I
Secure HAProxy with Let’s Encrypt Read More »
