Nagios SNMP Monitoring of Linux Hosts on AlienVault USM/OSSIM

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Nagios SNMP Monitoring of Linux Hosts
In this guide, we are going to learn how to configure Nagios SNMP monitoring of Linux hosts. We will be using AlienVault USM/OSSIM as our Nagios server. Just like we have stated in our previous articles, AlienVault uses Nagios by default for monitoring hosts. In order to monitor hosts, you can use the agent-based or agentless method. Agent-based method involves...

How to Install OSSEC Agent on Solaris 11.4

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In this tutorial, we are going to learn how to install and configure OSSEC agent on Solaris 11.4. Note that this is not an official guide but rather a documentation of the steps that I took myself in order to get OSSEC agent working on Solaris 11.4. Just like we have explained in our other tutorials regarding installation of OSSEC...

How to Install and Setup OSSEC agent on Ubuntu 18.04/CentOS 7

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In this guide, we are going to learn how to install and configure OSSEC agent on Ubuntu 18.04/CentOS 7. OSSEC is an open source Intrusion Detection System (HIDS)  that runs across multiple OS platforms such as Linux,Solaris, AIX, HP-UX, BSD, Windows, Mac and VMware ESX. It monitors all aspects of system activity such as; file integrity monitoring Windows registry monitoring log...

Install Nagios Plugins and NRPE agents on CentOS 7/RHEL 7/Fedora 29

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Install Nagios Plugins From Source RHEL/CentOS/Oracle Linux
In this article, we are going to learn how to install Nagios Plugins and NRPE agents on CentOS 7/RHEL 7/Fedora 29 server using a package manager. You can install them from the source in case the server has no internet connections. This method however may results in the dependency issues. In our previous tutorials, we learnt how to install Nagios...

Install and Configure Zabbix 4.0 from Source on Fedora 29/Fedora 28/CentOS 7

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Install and Configure Zabbix
In this guide, we are going to learn how to install and configure Zabbix 4.0 from source on Fedora 29/Fedora 28/CentOS 7. Zabbix is an enterprise class open-source monitoring solution designed for real time monitoring of networks, servers, virtual machines and cloud sources. It also monitors any possible server performance metrics and incidents such as CPU utilization, memory utilization, Network...

How to Monitor Disk Input/Output on Linux

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How to Monitor Disk Input/Output on Linux
In this tutorial, you will learn how to Monitor Disk Input/Output on Linux. In most cases whenever your Linux Server experience a performance slow down, the first thing you would want to check is the CPU or Memory usage using top, htop or any othet command. However all my seem well except the I/O Wait (wa, %iowait), a form...

How to Measure CPU Usage in Linux

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How to Measure CPU Usage in Linux
This simple guide will take you through how to Measure CPU Usage in Linux. CPU is critical to every other system operations. If a process consumes too much of CPU such that it becomes unavailable to other process, it causes performance bottleneck. Therefore, in order to troubleshoot any CPU related problems, you can use any of the following tools. How...

How to Monitor Remote Linux Hosts and Services with Icinga 2 on Ubuntu 18.04

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In this very tutorial, you are going learn how to monitor hosts and services with Icinga 2 on Ubuntu 18.04 LTS. Well, Icinga 2 can be used to monitor the availability of hosts and services. Hosts and services can be virtually anything; Network services (HTTP, SMTP, SNMP, SSH, etc.),Printers, Switches or routers, Temperature sensors, or any other local or...

How to Install Icinga 2 and Icinga Web 2 on Ubuntu 18.04 LTS

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install icinga2/icingaweb2
In this tutorial, we are going to learn how to install Icinga 2 and Icinga Web 2 on Ubuntu 18.04 LTS. Icinga 2 is an open source monitoring system which checks the availability of your network resources (CPU load, uptime, free disk space, memory consumption), notifies users of outages and generates performance data for reporting. It is scalable and...

Configure Nagios Availability Monitoring on AlienVault USM/OSSIM

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In this guide, we are going to learn how to configure Nagios Availability Monitoring on AlienVault USM/OSSIM. We will cover how to configure host as well as service availability monitoring. Host monitoring reports whether an asset is up or down while Services monitoring discovers services on an asset and monitors their availability. AlienVault uses Nagios by default for host availability...