Linux Tutorials on the topic “security”
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How to Install OpenVPN Server and Client with Easy-RSA 3 on CentOS 7
Author: Muhammad Arul • Tags: centos, linux, networking, security • Comments: 0 • Published: Apr 16, 2019OpenVPN is an open source application that allows you to create a secure private network over the public internet. In this tutorial, we will show you how to step-by-step install and configure OpenVPN on CentOS 7.6. And we will implement the certificate-based OpenVPN authentication.
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How to install Fail2Ban on CentOS 7
Author: Antonio Valencia • Tags: centos, linux, security, server • Comments: 8 • Updated: Apr 04, 2019Most Linux servers offer an SSH login via Port 22 for remote administration purposes. This port is a well-known port, therefore, it is often attacked by brute force attacks. Fail2ban is a software that scans log files for brute force login attempts in real-time and bans the attackers with firewalld or iptables. This tutorial shows the installation and configuration of Fail2Ban with firewalld on CentOS 7.
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Linux Basics: How To Create and Install SSH Keys on the Shell
Author: howtoforge • Tags: linux, security, shell • Comments: 4 • Updated: Apr 02, 2019SSH keys offer a highly secure manner of logging into a server with SSH as against mere dependence on a password. This tutorial shows you how to generate an SSH key pair by using the ssh-keygen command and how to configure the SSH Daemon to only allow logins by key.
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Tips and Tricks to Secure Your Nginx Web Server
Author: Hitesh Jethva • Tags: debian, linux, nginx, security, ubuntu • Comments: 5 • Published: Mar 14, 2019Nginx is an open source, lightweight, high-performance the fastest growing web server around the world. In this tutorial, we will explain some popular Nginx server security tips and tricks.
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How to Setup Kerberos Server and Client on Ubuntu 18.04 LTS
Author: Muhammad Arul • Tags: linux, security, server, ubuntu • Comments: 0 • Published: Feb 20, 2019In this tutorial, we will show you how to set up Kerberos authentication between two Ubuntu 18.04 servers. We will install and configure the Kerberos server on the Ubuntu server and then install the Kerberos client on the other. Finally, we will test the authentication of the SSH service with the Kerberos server.
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Three Tools to Scan a Linux Server for Viruses, Malware and Rootkits
Author: Till Brehm • Tags: centos, debian, fedora, linux, other, security, ubuntu • Comments: 16 • Updated: Feb 12, 2019Servers connected to the internet are seeing a constant level of attacks and scans all day. While a firewall and regular system updates are a good first defense to keep the system safe, you should also check regularly that no attacker got in. The tools described in this tutorial are made for these sanity checks, they scan for malware, viruses and rootkits.
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Getting started with acme.sh Let's Encrypt SSL client
Author: Blago Eres • Tags: linux, security • Comments: 0 • Published: Feb 05, 2019Acme.sh is a simple, powerful and easy to use ACME protocol client written purely in Shell (Unix shell) language, compatible with bash, dash, and sh shells. It helps manage installation, renewal, revocation of SSL certificates.
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How to Install Matomo Web Analytics on Ubuntu 18.04 LTS
Author: Blago Eres • Tags: linux, security, ubuntu, web server • Comments: 0 • Published: Jan 17, 2019Matomo (formerly Piwik) is a free and open source web analytics application for web servers. This tutorial will show you how to install Matomo on a Ubuntu 18.04 LTS system using Nginx as the web server and we will secure the website with a Let's Encrypt SSL certificate.
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The creation of User, Certificate and Signing of CSR for Lemur Certificate Manager
Author: Ahmad • Tags: linux, security • Comments: 0 • Published: Nov 28, 2018In this article, we will perform following scripts to interact with Lemur using the terminal: Creation of Authority using CFSSL in the Lemur GUI. This CFSSL Authority will be used in our scripts to generate the certificate.
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Spectre and Meltdown CPU Vulnerability Test and Microcode Update on Linux
Author: Jose Gutierrez • Tags: linux, security • Comments: 3 • Published: Nov 22, 2018This tutorial covers an introduction to Spectre & Meltdown CPU Vulnerabilities, a test to find out if your hardware is affected and instructions on how to install Intel Microcode updates to fix the issue on Linux.
