Monitoring

How To Use Tripwire to Detect Server Intrusions on an Ubuntu VPS — step-by-step Linux tutorial on Progressive Robot

How To Use Tripwire to Detect Server Intrusions on an Ubuntu VPS

Although it is possible to guard your server environment against attacks, it is important to be able to detect whether an intruder does manage to compromise your security. Tripwire is a tool that can be used to detect changes in the filesystem that may indicate that an unauthorized person has entered and modified files. In this guide, we will discuss how to install and configure tripwire on an Ubuntu 12.04 VPS.

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How To Install and Configure NATS on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Configure NATS on Ubuntu 16.04

NATS is an open source high performance messaging system, often described as “a central nervous system for the cloud”. In this tutorial you’ll configure gnats, the official NATS server and create a basic server overload warning system that sends out emails when server load gets too high, using `gnatsd` as its message broker.

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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 Install Linux Socket Monitor (LSM) on CentOS 6.4 — step-by-step Linux tutorial on Progressive Robot

How to Install Linux Socket Monitor (LSM) on CentOS 6.4

In this article we will be looking at enhancing system security by increasing the level of monitoring performed. We are going to set up Linux Socket Monitor (LSM) which sends out alerts when a new socket / port is created, which is a potential signal of an intrusion by an unknown application taking over its host.

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How To Monitor Server Health with Checkmk on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Monitor Server Health with Checkmk on Ubuntu 18.04

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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