Securing remote access to your home or server network is essential, and WireGuard VPN offers a robust, high-speed, and easy-to-configure solution. In this guide, we’ll walk through setting up a WireGuard VPN server on OPNSense, and configuring clients (peers) on Android, iOS, and Linux. Additionally, we’ll discuss how to use WireGuard for securing a server environment versus remote user connections.

DNS (Domain Name System) is often viewed as the phonebook of the internet. DNS translates domain names into IP addresses. However, it can also be a powerful tool for enhancing security. Here is how to use DNS to protect your domain.

E-mail servers rely on various DNS records to ensure proper function, security, and deliverability. Configuring these records correctly can protect your domain from spoofing, phishing, unauthorized use, improve e-mail deliverability, and protect your reputation. This article provides an in-depth explination of the DNS records which are crucial for e-mail server operations and security, including newer standards, like BIMI and MTA-STS.

Recently, I needed to redo my email server. The mail reasons for this were that I was finding it hard to control spam, and I could not send email. As I was looking around for a guide, or for examples I found the Citadel software. Citadel is a one stop solution, so rather than installing multiple pieces of software for different aspects of a mail server I install, and secure one. Citadel has a long heritage coming out of the BBs scene of the 1980s and 1990s.

A while ago, I wrote about some fun things to do to help secure your servers. Among the things I included was information about SSH banners, and Message of the Day files. At the time, I was not able to generate dynamic content for the Message of the day. Recently, I learned how to accomplish dynamic content on CentOS/Redhat based Linux systems. My goals for this project was to show the following: