Monitoring

Adding Logstash Filters To Improve Centralized Logging (Logstash Forwarder) — step-by-step Linux tutorial on Progressive Robot

Adding Logstash Filters To Improve Centralized Logging (Logstash Forwarder)

Logstash is a powerful tool for centralizing and analyzing logs, which can help to provide and overview of your environment, and to identify issues with your servers. One way to increase the effectiveness of your Logstash setup is to collect important application logs and structure the log data by employing filters, so the data can be readily analyzed and query-able. We will build our filters around “grok” patterns, that will parse the data in the logs into useful bits of information.

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How To Protect SSH with fail2ban on CentOS 6 — step-by-step Linux tutorial on Progressive Robot

How To Protect SSH with fail2ban on CentOS 6

fail2ban provides a way to automatically protect virtual servers from malicious behavior. This tutorial shows you how to download the required EPEL repository needed to install Fail2Ban, copy the Configuration File, configure the fail2ban defaults, and configure the ssh defaults. This tutorial describes the required steps to set up fail2ban on CentOS.

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How To Install DenyHosts on Ubuntu 12.04 — step-by-step Linux tutorial on Progressive Robot

How To Install DenyHosts on Ubuntu 12.04

DenyHosts is a security tool written in python that monitors server access logs to prevent brute force attacks on a virtual private server. The program works by banning IP addresses that exceed a certain number of failed login attempts. This tutorial explains how to install denyhosts, how to whitelist your IP address, and where to find the denyhosts configuration file. It is written for Ubuntu 12.04.

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How To Install DenyHosts on CentOS 6 — step-by-step Linux tutorial on Progressive Robot

How To Install DenyHosts on CentOS 6

DenyHosts is a security tool written in python that monitors server access logs to prevent brute force attacks on a virtual private server. The program works by banning IP addresses that exceed a certain number of failed login attempts. This tutorial explains how to install denyhosts, how to whitelist your IP address, and where to find the denyhosts configuration file. It is written for CentOs.

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How To Monitor Server Health with Checkmk on Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

How To Monitor Server Health with Checkmk on Ubuntu 20.04

Checkmk is a monitoring solution that is both robust and simpler to install than many of its competitors. It is a self-contained software bundle that combines Nagios (a popular and open-source alerting service) with add-ons for gathering, monitoring, and graphing data. It also comes with Checkmk’s web interface — a comprehensive tool that addresses many of Nagios’s shortcomings. In this guide we will set up Checkmk and monitor two separate hosts: an Ubuntu 18.04 server and a CentOS 7 server.

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