UFW Essentials: Common Firewall Rules and Commands for Linux Security
Master the essentials of UFW with this guide to common firewall rules and commands. Learn how to configure, enable, and secure your Linux system using UFW.
Blueprint: How Ghost Migrated From Dedicated Servers to the cloud provider
This the cloud provider Blueprint article was written by Sebastian Gierlinger, a Senior DevOps Engineer at Ghost. It covers the steps that were taken to migrate the Ghost(Pro) infrastructure from dedicated servers to cloud servers. In each step, Sebastian will discuss the challenges that were faced, how each challenge was solved, and why each solution was chosen. He’ll also provide links to relevant resources that he found to be helpful.
Konfigurieren von Packet Filter (PF) unter FreeBSD 12.1
Der Autor hat den COVID-19 Relief Fund dazu ausgewählt, eine Spende im Rahmen des Programms Write for DOnations zu erhalten. Die Firewall ist wahrscheinlich eine der…
How To Configure Suricata as an Intrusion Prevention System (IPS) on Rocky Linux 8
In this tutorial you will learn how to configure Suricata’s built-in Intrusion Prevention System (IPS) mode on Rocky Linux 8. By default Suricata is configured to run as an Intrusion Detection System (IDS), which only generates alerts and logs suspicious traffic. When you…
How To Install and Secure Redis on CentOS 8
This tutorial provides instructions for installing Redis on a CentOS 8 server and using its built-in security features, in coordination with some other security configurations, to keep it from being accessed by unauthorized users.
How To Protect an Nginx Server with Fail2Ban on Rocky Linux 9
In this guide, you will learn how to install `fail2ban` on a Rocky Linux 9 server and configure it to monitor your Nginx logs for intrusion attempts. Fail2ban can significantly mitigate brute force attacks by creating rules that automatically alter your firewall configuration to ban specific IPs after a certain number of unsuccessful login attempts. This will allow your server to harden itself against these access attempts without intervention from you.
Einrichten einer Firewall mit firewalld unter CentOS 8
firewalld ist eine für viele Linux-Distributionen verfügbare Firewall-Verwaltungssoftware, die als Frontend für die kernelinternen nftables- oder…
How To Set Up a Firewall with UFW on Ubuntu 16.04
UFW, or Uncomplicated Firewall, is an interface to iptables that is geared towards simplifying the process of configuring a firewall. While iptables is a solid and flexible tool, it can be difficult for beginners to learn how to use it to properly configure a firewall. If you’re looking to get started securing your network, and you’re not sure which tool to use, UFW may be the right choice for you. This tutorial will show you how to set up a firewall with UFW on Ubuntu 16.04.
Como instalar e configurar um servidor OpenVPN no CentOS 8
Uma Virtual Private Network (VPN) permite que você atravesse redes não confiáveis como se estivesse em uma rede privada. Ela dá a você a liberdade de acessar a internet com segurança no seu smartphone ou notebook ao se…
Understanding Suricata Signatures
In this tutorial you’ll learn how Suricata signatures are structured, and some important options that are commonly used in most rules. Once you are familiar with how to understand the structure and fields in a signature, you’ll be able to write your own signatures that you can combine with a firewall to alert you about most suspicious traffic to your servers, without needing to use other external rulesets.
