How To Create a Self-Signed SSL Certificate for Nginx on Debian 9
In this guide, we will show you how to set up a self-signed SSL certificate for use with an Nginx web server on a Debian 9 server.
How To Create Rules, Timelines, and Cases from Suricata Events Using Kibana’s SIEM Apps
In this final tutorial in the series, you will create custom Kibana rules and generate alerts within Kibana's SIEM dashboards. Once you have rules in place and understand where and how to filter Suricata's logs using Kibana, you'll explore how to create and manage cases using Kibana's timeline analysis tools. By the end of this […]
How To Encrypt Traffic to Redis with Stunnel on Ubuntu 16.04
Redis is an open-source key-value data store, using an in-memory storage model with optional disk writes for persistence. It features transactions, a pub/sub messaging pattern, and automatic failover among other functionality. Redis has clients written in most languages with…
Cómo alojar un sitio web usando Cloudflare y Nginx en Ubuntu 18.04
El autor seleccionó Electronic Frontier Foundation para recibir una donación como parte del programa Write for DOnations. Cloudflare es…
Install an SSL Certificate from a Commercial Certificate Authority
Learn how to install an SSL/TLS certificate from a commercial certificate authority on Apache or Nginx: CSR creation, chain installation and verification.
How To Install and Secure Memcached on CentOS 7
Memory object caching systems like Memcached can optimize backend database performance by temporarily storing information in memory, retaining frequently or recently requested records. In this guide, we will cover how to protect your Memcached server by binding your installation to a local or private network interface and creating an authorized user for your Memcached instance.
Como Instalar e Utilizar o Linkerd com o Kubernetes
O autor selecionou a Tech Education Fund para receber uma doação como parte do programa Write for DOnations. Um [service…
How to Install Linux Socket Monitor (LSM) on CentOS 6.4
In this article we will be looking at enhancing system security by increasing the level of monitoring performed. We are going to set up Linux Socket Monitor (LSM) which sends out alerts when a new socket / port is created, which is a potential signal of an intrusion by an unknown application taking over its host.
Auflisten und Löschen von iptables-Firewall-Regeln
Iptables ist eine Firewall-Technologie, die in vielen Linux-Systemen eine wesentliche Rolle bei der Netzwerksicherheit spielt. In diesem Tutorial erläutern wir die Verwendung der folgenden iptables-Aufgaben: Regeln auflisten, Paket- und Byte-Zähler löschen, Regeln löschen, Ketten leeren (alle Regeln in einer Kette löschen) und iptables-Firewall vollständig zurücksetzen.
How To Protect an Nginx Server with Fail2Ban on Rocky Linux 8
In this guide, you will learn how to install `fail2ban` on a Rocky Linux 8 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.
