Setup and Configure CentOS Server Part 2

In part one, we began by changing the root password and then creating an account that will be able to escalate to root privileges when needed. Now, you need to make sure that only that user can become root and not anyone else.
The easiest way to do this is to use the “wheel” group. You […]

Setup and Configure CentOS Server Part 1

CentOS is essentially a free implementation of the open source code from Red Hat Enterprise Linux. Logos and other trademarks aside, CentOS is RHEL at its core without the licensing fees. As such, CentOS has become very popular among server administrators as an ideal Linux server solution. This brief tutorial will explain how to get […]

Ubuntu Server Name Resolution Settings

If you have been following our Ubuntu server series, you have learned how to setup a LAMP server and configure an APF firewall. In order to do any of this, you likely already had your networking configured correctly, but if you do not, this brief tutorial explain how to setup name servers and ensure they […]

Hot Fix: Apache Displays Contents of PHP Script Instead of Running Script

If you have ever installed Apache HTTP Server and had it up and running perfectly without any issues, you are truly a genius or very lucky. Inevitably, you are going to encounter a few hiccups if you are doing things manually. With all of the imaging, virtual machines, and hosting automation technology, few system administrators […]

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. ┬áIn 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 APT

APT (Advanced Packaging Tool) is the package management system for Debian GNU/Linux and Debian-based operating systems such as Ubuntu. Some Red Hat, CentOS and SUSE Linux users may also prefer to use APT, although it is not the default. As we have previously discussed, the main command for APT is “apt-get” followed by […]

Nameserver Subnet Warnings

When you setup a new dedicated server, nameservers are some of the most important components. Without nameservers, your server’s websites cannot connect to the outside world. Any type of nameserver errors should be addressed immediately. The following error is a common one:
WARNING: Not all of your nameservers are in different subnets
If you […]