Learning how to manage users effectively is an essential skill for any Linux system administrator. In this guide, we will discuss how to add and delete users and assign sudo privileges on an Ubuntu 14.04 server.
Um das maneiras de se proteger contra erros de memória insuficiente em aplicativos é através da adição de um espaço de swap ao seu servidor. Neste guia, falaremos sobre como adicionar um arquivo swap a um servidor Ubuntu 20.04. <$>[warning] Aviso: embora o swap seja…
In this the cloud provider article, following up on our Capistrano Automation Tool Series, we will see how to introduce another little framework (or tool), this time to help you with pushing your code to your servers without dealing with SFTP file managers — automatically!
The previous tutorials in this series guided you through installing, configuring, and running Suricata as an Intrusion Detection (IDS) and Intrusion Prevention (IPS) system. You also learned about Suricata rules and how to create your own. In this tutorial you will explore…
This tutorial uses Docker Compose to demonstrate the automation of continuous integration workflows.
Apache is the most popular web server in the world. It is well-supported, feature-rich, and flexible. When designing your web pages, it is often helpful to customize every piece of content that your users will see. This includes error pages for when they request content…
This tutorial walks you through the configuration of GeoIP with Piwik on an Ubuntu 12.04 VPS.
Port knocking is a method of hiding services behind a firewall until a specific sequence of network activity occurs. After detecting this, the firewall is dynamically reconfigured to expose the requested service for the client who completed the specific sequence of activity. In this article, we will discuss how to implement a port knocking mechanism on an Ubuntu VPS using only the tools available within the iptables package.
In this tutorial you will learn how to configure Suricata’s built-in Intrusion Prevention System (IPS) mode. When you enable IPS mode, Suricata can actively drop suspicious network traffic in addition to generating alerts. Once you know which signatures you would like to use in IPS mode, you’ll convert their default action to drop or reject traffic. With your signatures in place, you’ll learn how to send network traffic through Suricata using the netfilter NFQUEUE iptables target.
In Part 3 of this series, we look at how Jekyll creates URLs and show how to change the pattern for an individual file or the entire site. Then we look a how to link to pages within our site and stage it for testing.
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