Category Archives: How-To’s

How To Setup Passwordless SSH

By | October 17, 2016

Setting up passwordless SSH is a simple two step process. This guide will walk you through doing it with OpenSSH and PuTTY. Although PuTTY is available for UNIX like operating systems, I am going to assume you are using it on a Windows computer. Here are the two steps: Create a private key on the… Read More »

Self-Signed Certificate How-To

By | September 27, 2016

This guide will show you how to create a self-signed certificate with various tools. Quick Reference OpenSSL With New RSA Key openssl req -days 500 -newkey rsa:4096 -keyout privkey.pem -nodes -sha256 -x509 -out cert.pem With Existing RSA Key openssl req -days 500 -key privkey.pem -nodes -sha256 -x509 -out cert.pem Option Required What It Does req… Read More »

Introduction to Positional Notation

By | September 17, 2016

In computing, you will come across various numbering systems such as binary and hexadecimal. These systems are known as positional notation, but with different bases. This guide will explain positional notation and show you how to convert from one system, such as hexadecimal, to another. Positional Notation You probably learned this in elementary school, but… Read More »

Linux Home Router and Firewall How-to (IPv4)

By | July 30, 2016

This how-to assumes basic familiarity with the Linux distribution of choice and basic IPv4 networking. It assumes the operating system is installed. Steps for (Red Hat Enterprise Linux) RHEL 7 based, RHEL 6 based, and Debian based distributions are included. If there are requests for other distributions, post a comment or use the contact page.… Read More »