administration

How to monitor file integrity on Linux using Osquery

How to monitor file integrity on Linux using Osquery

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The basic concept involved with the use of the osquery application is the “tabular abstraction” of many aspects of the operating system, such as processes, users, etc. The data is stored in tables which can be queried using SQL syntax, directly via the osqueryi shell, or via the osqueryd daemon.

In this tutorial we will see how to install the application, how to run basic queries, and how to use FIM (File Integrity Monitoring) as part of your Linux system administration job.

In this tutorial you will learn:

  • How to install osquery
  • How to list the available tables
  • How to perform queries from the osqueryi shell
  • How to use the osqueryd daemon to monitor file integrity

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Docker on Ubuntu 20.04 LTS Focal Fossa

How to Install Docker On Ubuntu 20.04 LTS Focal Fossa

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Docker is a combination of platform as a service products that use virtualization to provide software in packages called containers which can communicate with each other through well-defined channels. This tutorial focuses on Installing the latest Docker release on Ubuntu 20.04 LTS Focal Fossa.

In this tutorial you will learn:

  • How to install Docker from the standard Ubuntu Repository
  • How to enable Docker to start after the system reboot
  • How to allow regular user to administrate Docker

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Install Intel wireless firmware on Debian 7 wheezy

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If you have not installed wireless firmware to support your wireless network card during Debian wheezy installation you can do so later by enabling debian’s non-free repository. Here is how you do it. First open your /etc/apt/sources.list file and change line ( your repository mirror may be different ):

from:

deb http://http.debian.net/debian/ wheezy main

to:

deb http://http.debian.net/debian/ wheezy main non-free

Once done update packages list with a command:

# apt-get update

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destroyed-hard-drive

Hard drive shredding on Linux

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When we delete a file from a filesystem, the data is not physically removed: the operating system simply marks the area previously occupied by the file, as free and makes it available to store new information. The only way to make sure data is actually removed from a device is to override it with other data. We may want to perform such operation for privacy reasons (maybe we plan to sell the device and we want to be sure the new owner cannot access our data), or maybe to prepare a device for encryption. In this tutorial we will see some tools we can use to completely wipe data on a device

In this tutorial you will learn:

  • How to shred data using dd
  • How to secure-erase files and devices using the shred utility
  • How to overwrite data using badblocks

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mount usb drive kali linux

How to mount USB drive on Kali Linux

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mount usb drive kali linux

Objective

The procedure on how to mount USB drive on Kali Linux is no different from any other Linux distribution. Kali Linux was used by this guide to provide you with simple to follow steps on how to mount USB drive on Linux.

Operating System and Software Versions

  • Operating System: – Kali Linux

Requirements

Privileged access to your Kali Linux system will be required.

Difficulty

EASY

Conventions

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Adapta Theme On Ubuntu 18.04

The 10 Best Ubuntu Themes (18.04 Bionic Beaver Linux)

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Introduction

Ubuntu 18.04 recently came out, and it’s a great time to give the new version a chance. Most Linux users like to make their computer their own, and there are a ton of excellent options to customize Ubuntu, and every Linux distribution, including beautifully designed GTK themes.

Since Ubuntu 18.04 uses GNOME as its default desktop, it’s easier than ever to find great looking themes to spice up your desktop. These 10 themes are among the best available right now.

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Install AWS CLI on Ubuntu 18.04 Bionic Beaver Linux

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Objective

The objective is to install AWS CLI on Ubuntu 18.04 Bionic Beaver Linux.

This article will describe a procedure on how to install AWS CLI on Ubuntu 18.04 from a standard Ubuntu repository using the apt command as well as how to install AWS CLI using the snap package.

Operating System and Software Versions

  • Operating System: – Ubuntu 18.04 Bionic Beaver

Requirements

Privileged access to your Ubuntu System as root or via sudo command is required.

Conventions

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How to Open/Allow incoming firewall port on Ubuntu 18.04 Bionic Beaver Linux

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Objective

The objective of this article is to serve as a quick reference guide on how to allow incoming traffic on any TCP or UDP port using Ubuntu 18.04 Bionic Beaver Linux with UFW firewall.

Operating System and Software Versions

  • Operating System: – Ubuntu 18.04 Bionic Beaver Linux

Requirements

Privileged access to your Ubuntu System as root or via sudo command is required.

Conventions

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