Server

Configure SNMP Version 3 to securely access your CentOS server using encryption. This article shows how to quickly set up SNMP versions 1,2 and 3 and then will show you have to make it secure.

An object in Nagios is a unit of information, such as a host, service, contact, group, timeperiod, etc. Since these units or objects represent text files, they can inherit properties from other units or objects.

Nagios Xi provides a wizard that will help set up the monitoring for Exchange. Install the wizard and then begin the process of setting up Exchange.

OSX is somewhat unique both in the fact that this is not a common server which is monitored and also your actually working with two operating systems, FreeBSD under the hood and OSX built on top.

This example uses CentOS 6 so one of the issues you will need to be aware of is SELinux.  The great aspect of a slave server is that you can update your primary DNS server and it automatically update the slave.

VSFTPD using SSL can be a great way to protect your FTP transfers.  This article will demonstrate how to set up the server, create the certificate, use FileZilla and modify the Ubuntu firewall.

The NRPE daemon provides a way for Nagios to monitor the internal aspects of a FreeBSD box.  This article will take you through the steps for installing NRPE on FreeBSD.

Administrators can save a lot of needless writes to the disk by mounting partitions with noatime.  Even if a file is read a write will occur to disk when you are using atime.

MNTOS (Multi Nagios Tactical Overview System) provides a way to view a distributed network of Nagios servers. In the example all the Nagios servers are Nagios Core.

A new feature implemented in CentOS 6 are control groups which are provided by the kernel.  Control groups or cgroups, provide a way to control resources used on the system like CPU, memory, bandwidth and other resources.  The use of cgroups will allow an administrator to provide precise control over the allocation, prioritizing, monitoring and managing of resources on the server.