Linux

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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.

How To Add PPP Kernel Support To OpenVZ Containers

How To Add PPP Kernel Support To OpenVZ Containers

If you are trying to build a VPN tunnel from within an OpenVZ container to some other system, you will most likely get the error message /usr/sbin/pppd: Sorry - this system lacks PPP kernel support. This tutorial explains how you can add PPP kernel support to your OpenVZ container so that you can start VPN connections from your container.

Data Recovery From Accidentally Deleted Files or Crashed Drives in Ubuntu

Data Recovery From Accidentally Deleted Files or Crashed Drives in Ubuntu

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.

Install Virtualbox 4.3.8 On a Debian 6 (Squeeze) Desktop

Install Virtualbox 4.3.8 On a Debian 6 (Squeeze) Desktop

In this tutorial I will show you to install the latest Virtualbox version in Debian 6 (Squeeze).
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