Blog Posts | Codearmo

Force All HTTP Traffic Through Cloudflare IP Ranges for Website Security

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In this post we show how to force all HTTP traffic to pass through Cloudflare IP ranges, and to ensure that the IP ranges is keep up-to-date we make a bash script to periodically update the ranges.

Published on April 18, 2026

Creating a Proxy for Web Traffic

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Guide on creating an outbound proxy server for web traffic between 2 or more servers with examples in Python and bash

Published on March 16, 2026

Connecting Two Ubuntu Servers with Private Networking & Public Internet Access

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Connect two Ubuntu servers to privately communicate with eachother in the same datacenter , allowing both to have public internet communication and also private between the instances. This can be a very useful way to save costs on data transfer which can be expensive over the public internet.

Published on November 05, 2025

Git Branching - Cheatsheet for Command Line

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My personal Cheatsheet of Git Branching and the errors I usually run in to! A full list of commands that I will update regularly about Git branching and merging.

Published on April 18, 2025

GitHub Desktop 🖥️ for Windows: Installation & Getting Started

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The ultimate beginner guide to download & install GitHub Desktop GUI for Windows—use Git & GitHub to push code, create repositories and clone others repos all from Graphical Interface

Published on April 17, 2025

How to Solve GitHub’s Large‑File Limit with Git LFS

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Tutorial on using Git lfs to prevent the remote: error: File is 1111 MB; this exceeds GitHub's file size limit of 100.00 MB. Easy Set up , on Ubuntu & Windows.

Published on April 17, 2025

New Linux Server? Do These 10 Things First (Checklist ✅)

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✅ Checklist of important steps for Linux servers. Securing and making Linux virtual machines easier to work with guide.

Published on April 09, 2025

🚨 Securing Linux Servers: Fail2ban Tool Install & Setup Guide

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🚨 Keeping your Linux server safe from brute-force attacks is a must — especially when it's sitting out there on the public internet . One of the easiest and most effective ways to harden your SSH access is by using Fail2Ban. In this guide we show how to set up it up for a Ubuntu Virtual Machine

Published on April 09, 2025

How to Generate an SSH Key 🔑

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Master SSH key setup 🔑 in minutes! Generate your public & private key pair, configure SSH access to your serve. A fast guide for developers who need seamless, secure SSH access. 🚀

Published on April 02, 2025

Web Scraping with Python: A Practical Introduction Using BeautifulSoup 🍜 (Step-by-Step Guide for Beginners)

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Learn how to build a 🐍 Python web scraper using Beautiful Soup to extract temperature data from a website and save it as a CSV file. A beginner-friendly guide to web scraping with practical examples.

Published on March 27, 2025

📈 Best Platforms to Trade Crypto Options in 2025: Where to Buy & Hedge Bitcoin Risk

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What are crypto options📈 ? They're advanced trading contracts that let you buy or sell crypto at a set price in the future — with limited risk and unlimited strategies. Learn how to trade Bitcoin options on platforms like Bybit, Deribit, and OKX using real tactics, pro tools 🛠️, and demo accounts 🎮 to sharpen your edge before going live 🚀.

Published on March 24, 2025

File Transfers with WinSCP vs Rsync

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A short post on how to optimally transfer large files or folders with many files from a Linux server to your local machine (or vice versa). Here we explore using WinSCP and rsync to ensure that we can download the files in a reasonable amount of time. We also look at compression techniques using gzip, and show real examples of how to achieve this efficiently.

Published on March 24, 2025