Linux Tutorials on the topic “security”

• How to install and use Volatility memory forensic tool

  Author: Ahmad • Tags: linux, security, ubuntu • Comments: 0 • Published: Jul 18, 2017

  One of the important parts of Malware analysis is Random Access Memory (RAM) analysis. It helps to identify the running malicious processes, network activities, open connections etc in the compromised system. This article is about the open source security tool "Volatility" for volatile memory analysis. It can be used for both 32/64 bit systems RAM analysis and it supports analysis of Windows, Linux, Mac & Android systems.

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• nginx: How To Block Exploits, SQL Injections, File Injections, Spam, User Agents, Etc.

  Author: falko • Tags: linux, nginx, security, web server • Comments: 9 • Updated: Jun 16, 2017

  This short article explains how you can block the most common exploits, SQL injections, file injections, spam and user agents used by hackers and bandwidth hoggers from your nginx vhosts with some simple configuration directives. This configuration is far from being complete, but it's a good starting point. You will have to watch your logs for attempted break-in attempts and then try to modify/complete the ruleset.

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• Nginx with libmodsecurity and OWASP ModSecurity Core Rule Set on Ubuntu 16.04

  Author: Dino Edwards • Tags: linux, nginx, security, ubuntu • Comments: 0 • Published: Jun 06, 2017

  In this tutorial, I will show you how to compile the latest version of Nginx with libmodsecurity (Modsecurity 3.x) NOT to be confused with Modsecurity 2.9. We will also be integrating the OWASP ModSecurity Core Rule Set (CRS).

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• How to Set up Nginx High Availability with Pacemaker, Corosync, and Crmsh on Ubuntu 16.04

  Author: Muhammad Arul • Tags: high-availability, linux, security, ubuntu • Comments: 1 • Published: May 26, 2017

  In this tutorial, I will show you step by step how to create a High Availability Clustered Nginx Web Server with Pacemaker, Corosync, and Crmsh. We will create an Active-Passive Cluster or Failover-cluster Nginx web server on Ubuntu 16.04.

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• How to install pandom: a true random number generator for Linux

  Author: Oliver • Tags: centos, debian, fedora, linux, opensuse, security, suse, ubuntu • Comments: 1 • Updated: May 22, 2017

  This tutorial explains how to install pandom: a timing jitter true random number generator maintained by ncomputers.org. The built-in Linux kernel true random number generator provides low throughput under modern circumstances, as for example: personal computers with solid state drives (SSD) and virtual private servers (VPS). This problem is becoming popular in Linux implementations, because of the continuously increasing need for true random numbers, mainly by diverse cryptographic purposes.

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• Libreswan based Ipsec VPN using preshared and RSA keys on Ubuntu

  Author: Ahmad • Tags: linux, security, ubuntu • Comments: 0 • Published: Apr 24, 2017

  The purpose of this tutorial is to explore LibreSwan which provides an IPsec protocol implementation. It is available in RedHat distributions, however, it can be compiled for another platform such as Ubuntu/Debian easily. In this article, the LibreSwan tool is built from source on Ubuntu, then a two peer VPN is configured using preshared & RSA keys between the gateway devices.

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• Three tools to scan a Linux server for Malware and Rootkits

  Author: Till Brehm • Tags: centos, debian, fedora, linux, other, security, ubuntu • Comments: 14 • Updated: Apr 07, 2017

  Servers 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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• How to Install and Configure CSF (Config Server Firewall) on CentOS 7

  Author: Muhammad Arul • Tags: centos, security • Comments: 6 • Updated: Mar 16, 2017

  Config Server Firewall / CSF is firewall application suite for Linux servers. CSF is also a Login/Intrusion Detection for applications like SSH, SMTP, IMAP, Pop3, the "su" command and many more. This tutorial will show the installation of CSF on CentOS 7 and guide you trough the first steps to use this powerful application suite.

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• How to Install and Use SSHFS on CentOS 7

  Author: Ahmed Qadeer • Tags: centos, linux, security • Comments: 4 • Updated: Mar 03, 2017

  SSHFS is a handy tool to share files securely. It is a filesystem based on the SSH File Transfer Protocol. In this tutorial we will see how to install SSHFS with from the CentOS repository with the yum command and also how to compile it from source.

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• A beginner's guide to understanding sudo on Ubuntu

  Author: Himanshu Arora • Tags: linux, security, shell, ubuntu • Comments: 1 • Published: Feb 13, 2017

  The sudo command on Linux: ever got a 'Permission denied' error while working on the Linux command line? Chances are that you were trying to perform an operation that requires root permissions.

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