CentOS

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How to find out if your server is affected from Openssl Heartbleed vulnerability (CVE-2014-0160) and how to fix that

How to find out if your server is affected from Openssl Heartbleed vulnerability (CVE-2014-0160) and how to fix that

A severe vulnerability in OpenSSL has been found, the vulnerability is named Heartbleed and affects the heartbeat implementation in Openssl version 1.0.1 up to version 1.0.1f. This velnerability can be used to get the private key of a SSL connection, so it is important to update the server immediately. The bug is fixed in OpenSSL 1.0.1g. All Major Linux Distributions have release updates to the vulnerability.

Securing SSH On Redhat/Centos With WiKID Two-Factor Authentication

Securing SSH On Ubuntu With WiKID Two-Factor Authentication

SSH offers a highly secure channel for remote administration of servers. However, if you face an audit for regulatory or business requirements, such as Visa/Mastercard PCI, you need to be aware of some potential authentication related short-comings that may cause headaches in an audit.

Improve Spam abuse protection in dovecot by restricting access to mail accounts by IP address (e. g. with ISPConfig 3)

Improve Spam abuse protection in dovecot by restricting access to mail accounts by IP address (e. g. with ISPConfig 3)

This howto will show you how to add ip restrictions to single mail accounts when using dovecot with MySQL.

This is especially useful if you need to access a mail account from only one single ip or a few ips or if you want to block specific ip addresses from accessing the mail account (e. g. due to spam abuse).

Install Apache2, PHP5 And MySQL Support On CentOS 6.5 (LAMP)

Install Apache2, PHP5 And MySQL Support On CentOS 6.5 (LAMP)

LAMP is short for Linux, Apache, MySQL, PHP. This tutorial shows how you can install an Apache2 webserver on a CentOS 6.4 server with PHP5 support (mod_php) and MySQL support.

Data recovery from accidentally deleted files or crashed drives in Redhat, CentOS and Fedora Linux

Data recovery from accidentally deleted files or crashed drives in Redhat, CentOS and Fedora Linux

This tutorial will help you to recover data from accidentally deleted data from Linux-file systems. This is a very drastic mistake by any user/admin which costs for huge penalties. This script will be a boon for newbies/expert for data management. I will be using TestDisk for data-recovery. Here I have simplified the task with the help of a script.

Script for converting Outlook pst to Thunderbird/Evolution compatible format on Linux

Script for converting Outlook pst to Thunderbird/Evolution compatible format on Linux

This tutorial will show how to convert Outlook PST into Thunderbird/Evolution compatible SBD format. For this  I have created a script for the conversion format.This will work in Debian/Ubuntu/CentOS too!

The Perfect Server - CentOS 5.10 x86_64 [ISPConfig 3]

The Perfect Server - CentOS 5.10 x86_64 [ISPConfig 3]

This tutorial shows how to prepare a CentOS 5.10 x86_64 server for the installation of ISPConfig 3, and how to install ISPConfig 3. ISPConfig 3 is a webhosting control panel that allows you to configure the following services through a web browser: Apache web server, Postfix mail server, MySQL, BIND nameserver, PureFTPd, SpamAssassin, ClamAV, and many more.

Using mount --bind To Move The Website And Email Directory Of a ISPConfig 3 Server To a New Directory

Use mount --bind To Move The Website And Email Directory Of a ISPConfig 3 Server To a New Directory

In the following guide, I will explain the procedure on how to move the email and website directory of a ISPConfig 3 installation to a new partition. This might become handy when your current partition runs out of space.

How to find outdated joomla versions on your server to reduce the risk of being hacked

Today I want to focus on a topic that can lead to huge problems of hacked accounts, spam mailings etc.: Outdated Joomla installations on your server.

Of course, this is valid for other software, too. The mentioned method should work in a similar way for other software. Since Joomla is widely spread throughout the internet, especially on shared hosting systems CMS (Content Management System), this howto will only cover Joomla so far.

Install And Use SALTStack In A Mixed Environment

Install And Use SALTStack In A Mixed Environment

Salt is a new approach to infrastructure management. Easy enough to get running in minutes, scalable enough to manage tens of thousands of servers, and fast enough to communicate with them in seconds. Salt delivers a dynamic communication bus for infrastructures that can be used for orchestration, remote execution, configuration management and much more... The main porpuse of this document is not just install SaltStack, because it is well documented elsewhere, but rather give you a slight insight of its usability.

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