FortiMail: Disable SMTP authentication
In this tutorial, I’ll explain how to disable SMTP authentication on the Fortimail MTA, which is enabled by default. SMTP authentication allows you to use the Fortimail …
Tag
Security
60 articles
FortiMail: Configuring DKIM for an email domain
In this tutorial, I’ll explain how to configure DKIM on Fortimail for an email domain for outgoing emails. To put it simply, DKIM allows you to sign outgoing emails; this …
Wazuh: Deploying a SIEM and EDR with Docker
In this tutorial, I’ll explain how to deploy Wazuh using Docker. Introduction to Wazuh To begin, I’ll introduce Wazuh . Wazuh is an open-source security platform that …
Exchange Server: CSP script-src-attr ‘none’ error (Mitigation CVE-2026-42897)
If you manage Exchange servers and your users are reporting strange errors in OWA (Content Security Policy, blocked buttons, calendar printing issues), don’t panic: you …
Fortimail: Remove mail server headers
In this tutorial, I will explain how to remove internal mail server headers from message sources. To understand what we are going to do, here are the sources of a message …
Sign RDP files and secure RDS farms after the April 2026 Windows updates
Since April 2026, Windows has required the signature of RDP files and an enhanced configuration of RDS farms. Find out how to correct errors, sign your RDP files and …
Active Directory: Configuring the LDAPS Protocol
In this tutorial, I will explain how to configure the LDAPS protocol in an environment Active Directory with secure connections to domain controllers using an SSL …
Nginx: managing bot connections
In this tutorial, I will explain how to manage bots and limit their impact on your websites with Nginx , especially when you use it as reverse proxy . Today, there are …
pfSense: Setting up a firewall
Presentation In this tutorial, I’m going to explain how to set up a place pfSense which is a distribution that allows you to set up a perimeter firewall. pfSense is a …
OPNsense: Setting up a firewall
Presentation In this tutorial, I will explain how to set up OPNsense, which is a distribution that allows you to set up a perimeter firewall. OPNsense is a fork based on …
BunkerWeb: Add a site or service to your configuration
Discover how to easily add a website or service to BunkerWeb. Step-by-step tutorial to integrate your web applications and secure your infrastructure
BunkerWeb: Fast and easy deployment with Docker Compose
Discover how to quickly and easily deploy BunkerWeb with Docker Compose. Step-by-step tutorial to secure your applications in minutes.