Linux Tutorials on the topic “security”
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How to safely wipe your data with Dariks Boot and Nuke bootable live CD
Author: Bill Toulas •
Tags: linux, security •
Comments: 3 Sometimes, we need to completely and irreversibly wipe all data contained in a disk to keep them from falling into the wrong hands. This may not be something we are doing on a day to day basis, but if you want to do it, you should do it right and ensure that the data cannot be recovered by experts. One of the many ways of doing this is through Darik's Boot and Nuke bootable live CD. This tool is made from the same team that develops the professional-grade Blancco data eraser, only it is available for free and without guarantee or support. The reason I like DBaN is because it is very simple to use and does the job fast.
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Encrypt your data with EncFS on Ubuntu 15.10
Author: Falko Timme •
Tags: security, ubuntu •
Comments: 0 EncFS provides an encrypted filesystem in user-space. It runs without any special permissions and uses the FUSE library and Linux kernel module to provide the filesystem interface. It is a pass-through filesystem, not an encrypted block device, which means it is created on top of an existing filesystem. This tutorial shows how you can use EncFS on Ubuntu 15.10 (Wiley Werewolf) to encrypt your data.
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How to do image steganography on Linux
Author: Bill Toulas •
Tags: centos, debian, linux, opensuse, security, ubuntu •
Comments: 1 Steganography is the ancient art of the information concealment. People have found numerous methods to achieve this such as “invisible” inks, messages hidden in objects, and the famous “null cipher”. The word “steganography” comes from the Greek words “steganos” and “graphy” which means “impenetrable writing”. The years have passed and steganography has evolved into a sophisticated part of cryptography.
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How to manage your passwords with Enpass on Linux
Author: Bill Toulas •
Tags: linux, security •
Comments: 2 Enpass is an advanced password manager that works natively on Linux. Although its open source nature is limited in the use of a free software encryption engine called SQLCipher, the tool offers good integration with widely used online services and can serve as a central platform where a lot of different passwords, accounts, and other miscellaneous information can be added. That said, it can be useful to many Linux users out there so here's a quick guide on how to set it up.
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Server monitoring with Munin and Monit on CentOS 7
Author: Till Brehm •
Tags: centos, monitoring, security •
Comments: 2 In this article, I will describe how you can monitor your CentOS 7 server with Munin and Monit. Munin produces nifty little graphics about nearly every aspect of your server (load average, memory usage, CPU usage, MySQL throughput, eth0 traffic, etc.) without much configuration, whereas Monit checks the availability of services like Apache, MySQL, Postfix and takes the appropriate action such as a restart if it finds a service is not behaving as expected. The combination of the two gives you full monitoring: graphics that lets you recognize current or upcoming problems (like "We need a bigger server soon, our load average is increasing rapidly."), and a watchdog that ensures the availability of the monitored services.
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How to install a wireless hotspot with captive page on Linux using CoovaChilli
Author: Joseph Zikusooka •
Tags: fedora, linux, mysql, networking, security •
Comments: 11 The purpose of this article is to demonstrate how you can turn a Linux based computer or laptop into a wireless hotspot where users can be authenticated via a captive portal page. For this task, the primary controller software will be CoovaChilli. This software is an ideal hotspot management solution for hotels, restaurants, supermarkets, parks, and any place offering WiFi Internet.
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How to install ProFTPd with TLS support on Ubuntu 15.04
Author: Till Brehm •
Tags: ftp, security, ubuntu •
Comments: 4 FTP is a very insecure protocol because all passwords and all data are transferred in clear text. By using TLS, the whole communication can be encrypted, thus making FTP much more secure. This article explains how to set up ProFTPd with TLS on an Ubuntu 15.04 server, how to add an FTP user and to use FileZilla to connect securely with TLS.
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How to secure your PDF documents with passwords (and how to crack them if needed)
Author: Bill Toulas •
Tags: centos, debian, desktop, opensuse, security, suse, ubuntu •
Comments: 9 Documents safety is a particularly sensitive matter due to the typical usage nature and possible value and importance of the contents. That said, users should be extra careful when sharing documents that shouldn't be leaked to other parties.
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Two Factor Authentication for ownCloud
Author: cornelinux •
Tags: cloud, security •
Comments: 3 This tutorial shows you how to protect ownCloud logins with two factor authentication by using privacyIDEA to manage the second authentication factor. privacyIDEA is a system to manage authentication devices for two factor authentication in your own network - not at any Identity Provider - thus keeping your identity and the identities of your users also under your control.
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OpenSSH Security Best Practices
Author: Muhammad Arul •
Tags: arch linux, centos, debian, freebsd, opensuse, security, server, shell, suse, ubuntu •
Comments: 9 SSH (Secure Shell) is a cryptographic network protocol for initiating text-based shell sessions on remote machines in a secure way. OpenSSH is a connectivity tool that most administrators rely on to work on their Linux and *BSD servers daily. This tutorial covers the best pratices to configure your SSH server securely.
