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 1.3 in version 3.4 and later. This article will show […]
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 configure and get setup but also have some very advanced […]
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 processing power if the temperature start getting close to 80deg […]
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 is the information to trim them down.
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, How do I role it back? If you have FreeBSD […]
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 local network, it should let them in without a password.
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 weeks. You can use these examples anytime you want records from […]
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 able to backup just the delta changes instead of the […]
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 am in the process of securing all my systems so […]
There are a number of times when I have had to change one string to another in a MySQL table. In the past I would do a MySQL dump, edit the file, and then import it back in. This worked […]
