Kernel modules permit enabling hardware features on a given system. For example, if we need to read from a particular filesystem from a hard drive, we need to load a particular kernel module. Or use a specific network card, a sound card or sound device, a video display, etc. This is mostly done automatically in […]
How to load and unload kernel modules in Linux
How to install Apache in FreeBSD with pkgng
The Apache Web Server is one of the most widely deployed web servers around the world. There are new and powerful alternatives you may have heard of, such as NGINX which seems to be the coolest thing around lately. There are meaningful differences between the two. Both are great but for example Apache has set […]
What is UNIX?
UNIX is an operating system. And your known equivalent is Windows or the Mac. You may even know about Linux. The purpose of an OS is to accommodate programs in order to get some work done. Editing pictures, browsing the web or serving data from a database. It is the thing that lets you operate […]
How to configure Apache HTTP with a TLS reverse proxy backend on FreeBSD
A few weeks ago I published a how to guide to configure Apache HTTP as a reverse proxy. On that ocasion I was following what the average guide on the internet does on Linux. A front end server with Apache HTTP on calls a backend server where the real site is sitting. Many backend calls […]
How to harden Apache HTTP
Disclaimer: This is a long article. I haven’t collected some nice configuration settings here for the sake of it. There are other hardening guides but some fall short on explaining the functionalities to be enabled or disabled. Every step is shortly, and hopefully clearly, explained so any reader can grasp the main idea of every […]
How to install Nagios on FreeBSD
As explained in an introduction article, Nagios is a monitoring software very well established and used in production on many environments. Results are displayed in a web page so it uses a web server to publish them to the user and needs some php code to do so. It is configured through files which happen […]
How to setup MariaDB master-slave replication on FreeBSD
Having all the data in just one server is not the best idea. Especially when talking about a database server. Spreading information in several boxes is a good measure to prevent data loss but also for performance. A MySQL/MariaDB master-slave replication scheme is often used as a good solution for both, data redundancy and speed. […]
How to install RKHunter on FreeBSD
In this post you will find simple instructions to install rkhunter on FreeBSD which is a root kit “hunter” so your system/s will have some security in place for that kind of unwanted software. But for those who do not know what a rootkit is, let’s give it a simple definition (which you can get […]
How to install ModSecurity 2 on FreeBSD
WARNING: A newer version of ModSecurity is available. The article to install ModSecurity 3 on FreeBSD can be found here. Will be published on March 1st, 2021. If you find the articles in Adminbyaccident.com useful to you, please consider making a donation. Use this link to get $200 credit at DigitalOcean and support Adminbyaccident.com costs. […]
How to mitigate Spectre and Meltdown on a Lenovo T430s with FreeBSD
As recently announced in a previous article I wanted to write a couple of guides on how to mitigate Spectre and Meltdown vulnerabilities in GNU/Linux and UNIX environments. It is always a good and I hope a standard practice to have your systems patched and if they aren’t for whatever the reason (that legacy thing […]