How to Add/Remove Yum Repositories

Red Hat Enterprise Linux, CentOS, Fedora and other Linux distributions based on RHEL all use YUM as a package management system to install, remove, and update software. Each distribution has its own main repository, but you can also install or remove third-party repositories whenever you like.
To add a YUM repository, type as root:
yum-config-manager –add-repo repository_url
For […]

How to Configure Linux Password Policies

One of your best weapons in the fight for server security is strong password management. Using the password policies you set in Linux, you enforce strong passwords, require password renewals and many other effective security measures.
First, you should install the cracklib module for PAM. Cracklib tests password strength. If you are using RHEL, CentOS or […]

Ajenti: Free and Open Source Alternative Control Panel

Most small and medium web businesses turn to cPanel or another commercial control panel when they want GUI management of their servers. But not everyone can afford the licensing fees, and some people just want a free and open source alternative. The first that probably comes to mind is Webmin, but it is no longer […]

Linux OS Reboot and Service Restart Guide

Your brand new Linux server may seem a bit intimidating at first, but with a little training and practice, you will find it to be very manageable. The following is a quick guide to restarting services and your OS itself.
Reboot – Rebooting your server is quite simple. On the console, you can press CTRL+ALT+Delete. If […]

Use VLC to Stream Live Media

You do not have to pay big money to stream video or audio over the Internet. If you already have a dedicated server or VPS, you can use VLC to stream media to your users.
VLC is a free and open source video player and streaming media server. On the client side, you can use it […]

4 Free OpenVZ Control Panels

OpenVZ is free and open source virtualization software that gives you the ability to create and manage virtual private server containers on your dedicated server. While you could manage it quite effectively from the command line, you may prefer to use some type of hosting automation system. The following are some free web-based management tools […]

How to Manually Install Packages on a RHEL/CentOS Server

On Red Hat Enterprise Linux and Red Hat-based servers (ex: CentOS), the best way to install packages is to use YUM. By entering the yum command, you can download and install software from the distribution and third-party repositories without any difficulty. On occasion, however, you might need to install an rpm package that is not […]

Server OS Profile: CentOS

Sometimes you need enterprise-level software but cannot afford the enterprise-level price. Such is often the case with dedicated servers. Many individuals and companies operate on a limited budget and cannot afford to pay for licensing and support for an enterprise server OS such as Red Hat Enterprise Linux. Others simply may not need the paid […]

Server OS Profile: Red Hat Enterprise Linux

For many years, some people believed it was impossible for a free and open source operating system like Red Hat Linux to be profitable. With the formulation of Red Hat Enterprise Linux, the company Red Hat proved that theory wrong and also established Linux as one of the most widely-used Unix server alternatives. It now […]

Is a Commercial Linux Distribution Worth the Price?

Deciding to go with Linux as your dedicated server’s OS of choice is only a first step. Linux, after all, is only the kernel of a wide variety of operating systems, called distributions. While all of them pretty much have the same security and stability benefits that likely caught your attention in the first place, […]

Linux VPS: Choosing the right Linux Distribution for your LAMP

Running a LAMP VPS means choosing a distro to go along with your server space; a choice that often comes with a number of judgments on the part of so-called “experts” in the field. Everyone has their favorite distro for their own reasons, but each one performs admirably in its own space. Choosing one comes […]

Server Provisioning Software

Setting up a single server can teach you a great deal about system administration, and it can even be fun for those who love technology.  But when you are placed in a position to deploy several servers, having to setup each one with the right operating system, software, network configuration, and security features can be […]

How to Change Your SSH Port with SELinux (RHEL 6)

In a previous post, we explained how to change the SSH port on your Linux server from the standard port 22.  In most cases, this works just fine, but if you are using Red Hat Enterprise Linux 6, there is a good chance you received an error such as […]

Fixing Problems with YUM

YUM is the package manager of choice for many Linux distributions, particularly Red Hat Enterprise Linux, CentOS, and Fedora. Other RHEL-based distributions also use YUM. When using a dedicated server, such as those offered by hosting company, you will most likely manage packages from the command line via SSH.
YUM has […]

How to Force YUM to Exclude Certain Packages

YUM is the package management system for several Linux distributions, including three major server operating systems: Red Hat Enterprise Linux (RHEL), Fedora, and CentOS. Generally speaking, you can always safely perform updates to the latest software packages offered in the distribution repositories.
There are, however, instances when certain updates are acceptable but others may not […]