Linux Tutorials on the topic “security”

  • How to reset the root password on Linux and FreeBSD

    tux Author: Manh.LuongTags: , , , , Comments: 2Published: Feb 03, 2016

    Listed below are the step by step procedures to reset the root password in different versions of CentOS, CoreOS, Debian, Ubuntu and FreeBSD. Begin this procedure by booting your server into single user mode.

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  • Getting started with Let's Encrypt SSL Certificates on Ubuntu

    ubuntu Author: Patrik HabdakTags: , , Comments: 1Published: Feb 01, 2016

    This tutorial will guide you through your very first configuration of an SSL website with Lets Encrypt certification. Let's Encrypt is a new SSL authority that provides free SSL certificates.

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  • How to setup an intermediate compatible SSL website with Let's Encrypt certificate

    tux Author: Patrik HabdakTags: , Comments: 1Published: Jan 19, 2016

    Many people have decided to implement Let's Encrypt into their production sites. I find this still a very bad idea to be done without being very (but really very) careful. Let's Encrypt brings you freedom but also limits you in using the certificate with SHA-256 RSA Encryption. Support for SHA-256 has improved over the last few years. Most browsers, platforms, mail clients and mobile devices already support SHA-256. However, some older operating systems such as Windows XP pre-SP3 do not support SHA-256 encryption. Many organizations will be able to convert to SHA-256 without running into user experience issues, and many may want to encourage users running older, less secure systems to upgrade. In this tutorial, we are going to deal with this incompatibility in a simple, but still nasty way.

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  • How to install and configure vsftpd with TLS on Debian 8 (Jessie)

    debian VMWare Image Download Author: Till BrehmTags: , , Comments: 0Published: Jan 15, 2016

    This article explains how to set up a TLS enabled vsftpd server on a Debian 8 server. FTP is a very insecure protocol by default 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.

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  • How to Encrypt your Data with EncFS on Debian 8 (Jessie)

    debian Author: Till BrehmTags: , Comments: 2Published: Jan 14, 2016

    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 Debian Jessie to encrypt your data.

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  • How to install ProFTPd with TLS support on Ubuntu 15.10

    ubuntu VMWare Image Download Author: Till BrehmTags: , , , , Comments: 0Published: Jan 04, 2016

    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 15.10 server, how to add an FTP user and to use FileZilla to connect securely with TLS.

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  • How to Encrypt Directories/Partitions with eCryptfs on Debian 8 (Jessie)

    debian Author: falkoTags: , , Comments: 1Published: Nov 17, 2015

    eCryptfs is a POSIX-compliant enterprise-class stacked cryptographic filesystem for Linux. You can use it to encrypt partitions and also directories that don't use a partition of their own, no matter the underlying filesystem, partition type, etc. This tutorial shows how to use eCryptfs to encrypt a directory on Debian Jessie.

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  • How to safely wipe your data with Dariks Boot and Nuke bootable live CD

    linux Author: Bill ToulasTags: , Comments: 3Published: Nov 16, 2015

    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

    ubuntu Author: falkoTags: , Comments: 0Published: Nov 10, 2015

    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 Install and Configure CSF (Config Server Firewall) on CentOS 7

    centos Author: Muhammad ArulTags: , Comments: 0Published: Oct 16, 2015

    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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