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There are many options available for Linux distros, over 500. Most of you can make into a server. However, if you are looking for the professional level server that, in my opinion, leads all other distros in functioning as a server then you need to investigate CentOS. Here is a list of the reasons that CentOS is top on my list for a server.

I am involved in a very personal war … a war on Spam not because I must, everybody else lives with it, but just because it makes me mad! Spam has made me so mad I have gone on a personal goal to cut the Spam on my servers to 0%…realistic, probably not. Die trying…yep that’s me.

Take a free online training course for Suse 11.x with illustrations, movies, and quizzes. This course is designed for new Linux users to help them learn how to use Linux.

One of the new features in Ubuntu 8.10 is the ability to create an encrypted directory for content you do not want others to access. Oh, by the way, did you know that anyone can read your files that are in your home directory? Here is an example of sue logged in and able to open files in mike's home directory. However, note that they are opened read-only so they cannot be changed. Still, who is looking at your stuff?

The self-signed certificate is a certificate that you can create yourself that will provide SSL encryption but without the verification of your website from an outside source. The outside verification does cost money. In other words, you can get the protection you need, encryption by doing it yourself. One thing to note, if you are taking people's credit card information then you will need to get a signed certificate as a warning appears when you are using self-signed certificates.

When building a mail server, one of the difficult choices is how big to build it. This tutorial is one way to test the load on a server to determine what it can handle. In order to evaluate the load on your mail server you can run smtp-source and combine that with snapshots of top to evaluate the load and I/O. Open two terminals and in one run the smtp-source command and in the other snapshots for top.

Postfix Mail Server will allow you to set a base domain and add any number of virtual domains. Virtual domains can either be virtual alias domains which are the domains that your server is the final destination for and also virtual mailbox domains which do not have local accounts and only pick up mail through IMAP or POP3.

The advantage of using OpenVZ to virtualize a squid proxy is that it provides better use of your hardware as you can set up other servers on the box. It also provides a very easy way to backup and create redundancy.

Linux Terminal Server Project (LTSP) provides a way for you to build a server and then add diskless computers to the server thus creating a huge savings for an organization. To the user, they will not recognize that the computer they are at is without a hard drive. They typically notice the fast speed at which the workstation runs and the features that are available.

Squid is a caching proxy server that can provide enhanced performance for your internal network users.. Squid will cache commonly accessed sites so that it can improve performance by 10-20% for Internet connections. Squid also provides security for the internal network by acting in behalf of the clients on your network.

The secure design, modular construction and ease of use have made Postfix an increasingly popular mail server. This tutorial will show you how to configure a basic Postfix Mail server for CentOS, OpenSuse and Ubuntu.

In addition to Desktop environments there are window managers that are separate programs that manage the windows and interface that you use. The reason you would explore the option of a different window manager is that it will use much less resources than the GNOME or KDE Desktop. However, less resources in terms of RAM and CPU means more basic features. In initial testing in similar settings for each these are the results. It is very clear that GNOME uses considerably more resources than any of the alternative window managers.

What do you have to lose by using Internet Phone with Ekiga Softphone. This is easy to set up and can save you a lot of money by using it. This is especially a useful tool if you have broadband access to the Internet. Here is a step-by-step approach to setting up your phone. Also provided is a link to compare Skype with Ekiga.

LDAP on Ubuntu 8.04 is a great choice for managing multiple services with one directory.

Pidgin is a multi-protocol instant messaging application allows the use of AIM, ICQ, Jabber/XMPP, MSN Messenger, Yahoo!, Bonjour, Gadu-Gadu, IRC, Novell GroupWise Messenger, QQ, Lotus Sametime, SILC, SIMPLE, MySpaceIM, and Zephyr.

This scenario is designed to accelerate access to the web server and provide a layer of defense for the web server that did not exist previously.

Ubuntu 8.04 offers several choices for FTP servers. However, VSFTPD is a great choice based on the secure design and enhanced SSL support for making connections.

The interest in the Ubuntu Server is directly related to the interest in the Ubuntu Desktop. How does this impact the deployment and use of the Ubuntu Server?

Security with Apache is an important topic, of which SELinux is a part. However, the frustration that results in trying to manage SELinux and how it relates to an Apache Web Server is huge. Most of the time, administrators bail and shut down SELinux because they do not have the time to correctly configure the system. SELinux can be a key to good security for the Apache daemon. This tutorial with help you develop several skills that will provide some level of SELinux management for the Apache Web Server.

This tutorial will help you understand how to manage Logical Volumes with the LVM Manager.