Networking

localhost refused to connect: 6 Ways to Fix

May 16, 2024

There are many potential causes for the "localhost refused to connect error". Troubleshoot the issue and learn how to solve the problem with this step by step guide.

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How to Enable Ubuntu Remote Desktop


This guide explains how to enable screen sharing on an Ubuntu system and remotely control it from another computer.

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How to Use Nmap to Scan for Open Ports

April 5, 2024

The Nmap hosted security tool can help you determine how well your firewall and security configuration is working. This guide will show you how to scan or check your Linux system for open ports using Nmap.

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Linux ping Command with Examples

April 2, 2024

The Linux ping command is a powerful tool for troubleshooting and testing network connectivity. In this guide, we will walk you through some of the most useful ping commands with examples.

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How to Set up & Use NGINX as a Reverse Proxy

March 14, 2024

NGINX (pronounced "Engine X") is a web server application used to set up a reverse proxy. This guide provides an in-depth look into setting up a reverse proxy via NGINX.

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How to Set up Nginx as Reverse Proxy for Docker Container


The easiest way to set up a reverse proxy is using Docker and Nginx. Learn how to set up reverse proxy for web servers by running each service in a Docker container.

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How to Redirect HTTP to HTTPS in Nginx

March 6, 2024

Nginx is a Linux-based web server and proxy that specializes in redirecting web traffic. It can be configured to redirect unencrypted HTTP web traffic to an encrypted HTTPS server. This guide will show you how to redirect HTTP to HTTPS using Nginx.

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How to Install Puppet on Ubuntu 20.04 and 22.04

January 25, 2024

Puppet is an open-source solution that helps you perform administrative tasks remotely.
This tutorial takes you step-by-step through the process of installing Puppet on Ubuntu 20.04.

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How to Fix "ssh_exchange_identification: read: Connection reset by peer" Error

January 19, 2024

This article deals with the most common causes of the "ssh_exchange_identification: read: Connection reset by peer" error. At the same time, we offer expert solutions for this error, such as managing Host-Based Access Control Lists, changing Intrusion prevention software settings, and editing the SSH daemon configuration file.

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How to Edit Hosts File on Windows

December 6, 2023

This article explains how to find and access the Windows hosts file and add custom IP to domain name mappings.

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