Archive for November, 2012


How to Reinstall Packages on a Linux Server

Linux has a very unique method of installing applications. Most Linux distributions rely on package management systems that download package archives containing all of the files for an application and then copy them to their correct locations. Once the files are installed, any changes you make to them can affect the functionality of the app. […]

What is Infrastructure as a Service?

If you have spent any time reading or even overhearing conversations about cloud computing, you have undoubtedly heard of the term Software as a Service (SaaS). Other common cloud terms include Platform as a Service (PaaS) and even Storage as a Service (STaaS). Another cloud model that is quickly gaining steam is Infrastructure as a […]

How to Require Regular Password Changes

A server is only as strong as its weakest user, and a weak user will have a weak password. One way you can at least make passwords a little more secure is to require users to routinely change them. To do so, use the login.defs file to set the number of days until users are […]

Configure Linux to Restrict SuperUser to One Group

The last thing you would ever want or need on your dedicated server is for an unauthorized user to gain root access. This applies to both those external users with malicious intent and those who have limited privileges and may just play around with their newfound powers. Either way, it is bad news. One practical […]

Sentry Tools: Host-Level Security for Linux/Unix Servers

Linux dedicated server security does not have to be overly complex. With the right tools, you can accomplish your security goals with efficiency. One such project, Sentry Tools, offers host-level security services for Linux and other Unix-like operating systems.
Sentry Tools includes: PortSentry, Logcheck/LogSentry, and HostSentry. PortySentry protects against portscans. LogSentry automates log file […]

3 Linux Server Performance Tips

If this is your first time using a Linux server, you may soon find out that Linux offers many performance advantages over other operating systems. Still, there are plenty of things you can do to make Linux perform even better.
1. Use the Security Tools – You must use the securities tools at your disposal. If […]

The Benefits of Using Solid State Drives

For the past two decades, hard disk drives (HDD) have ruled the storage landscape. Servers in particular have relied on high-performance HDDs to store data for short-term use. For long-term storage, many organizations may have used tape backup, although even those have gradually been replaced with hard drives. Now, solid state drives (SDD), which use […]

How to Manage Users in Webmin

On a dedicated server, managing users does not have to be a difficult affair. While the command-line tools are not overly complicated, you may at times want to use a graphical interface or run batch user operations. Webmin’s “Users and Groups” module may be exactly what you need.
You can find the Users and Groups module […]

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: SUSE Linux Enterprise Server

SUSE Linux Enterprise Server (SLES) has a colorful past. Like Red Hat Enterprise Linux, it was spawned from a commercial Linux distribution (SuSE Linux) primarily geared toward the desktop. In 2003, Novell acquired the german company SuSE Linux AG, and sought to reap the benefits from the already strong server base that the […]

How to Create a Virtual Machine in Cloudmin

There are many ways to create virtual machines and many virtualization tools you can use. KVM is one tool that is built into most Linux distributions. Cloudmin, an optional add-on for Virtualmin and Webmin, can provide a graphical interface for creating and managing virtual machines.
To create a virtual machine in Cloudmin, do the following:
1. Click […]