Server

We continue to index Linux server tutorials and other learning resources for Linux administrators. A few of the topics we write on include the Ubuntu server, CentOS, Nagios monitoring, Postfix mail server, and Bash Shell scripting. We also provide training classes and self-paced products in these areas.

Thank you for visiting, enjoy these Linux server tutorials.



Protecting Nagios From Zero-Day Exploits with ModSecurity
Server - Nagios

Protecting Nagios With ModSecurityYou have built a rock solid firewall, tested it with nmap scanning for ports that were open, locked down SSH with port knocking, restricted outgoing ports with iptables, setup psad to block attacks, and tcp_wrappers to limit access so you are set right? Well, not exactly....

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Monitoring a Cisco Router with Nagios
Server - Nagios

Monitor Cisco with Nagios
Sometimes you will need to create service checks using the MIBs that you can discover with snmpwalk. This tutorial will show you the process of creating service checks for a Cisco router manually.

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Scheduled Downtime and Nagios
Server - Nagios

Scheduled Downtime
If you are going to work on a server or device and need to schedule downtime so Nagios does not notify administrators that can be performed at the web interface.

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Nagios V-Shell Review
Server - Nagios

VShell
The Nagios Visual Shell (V-Shell) is a new project building upon those concepts. What follows is a short review of V-Shell and an interview with the lead developer of this new Nagios project.

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Using Advanced Intrusion Detection Environment, AIDE
Server - CentOS


The Advanced Intrusion Detection Environment, AIDE, has replaced the free version of Tripwire. It works the same as Tripwire, and uses the same command switches

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The Method of Installing Nagios: An Important Choice
Server - Nagios

Nagios Installation MethodWhich method you use to install Nagios determines how it can be used down the road. It is best to think carefully about whether you should compile or install from a RPM or DEB file.

 

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Changing the Looks of Nagios in 60 Seconds
Server - Nagios

Nagios Interface ChangesStruggling with the default Nagios interface? Change to a number of options for frontends, or skins for the Nagios web interface quickly and easily with a few simple steps. This tutorial covers Exfoliation, an easy to install Nagios fontend

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Network Monitoring with Nagios Plugins
Server - Nagios

Network Monitoring with Nagios PluginsAll Nagios plugins require three main elements to be configured properly. This tutorial explains the need for host definition, service definition, and command definition each time a plugin is used and illustrates it as a triangle.

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Network Monitoring with Nagios
Server - Nagios

Network Monitoring with NagiosNagios is a flexible and powerful tool to be used for checking devices and applications. This post explains the basic functions of the Nagios network monitoring tool for Nagios beginners and outlines several installation options including source, RPM, and Deb.

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