León Castillejos’ blog

“Never memorize something that you can look up.” - Albert Einstein

Posts

SSH tunnelling

  • 2 min read

Quick reference guide to use when you need to use OpenSSH’s various tunnelling features.

Read More

My path into AWS: Part 1, Introduction

  • 9 min read

This will be a series of posts on the AWS recruitment process. If you wish to see a list of all the posts for this series, click here. I will try to cover everything I find relevant, but I’m open to suggestions on what to include. Let me know via Twitter!

Read More

Damn Vulnerable Web Application v1.10 Virtual Machine

  • ~1 min read

The latest binary release for Damn Vulnerable Web Application is an ISO of the 1.0.7 version. It was released almost ten years ago in 2010. And the way to install a newer version is quite a lengthy process, so I decided to release this virtual machine with everything already set up.

Read More

Docker cleanup commands

  • 2 min read

It is important that from time to time, machines running Docker are cleaned because otherwise, Docker leftovers will start piling up and eating precious storage space.

Read More

Push notifications for Linux logins

  • 4 min read

An easy walkthrough on enabling instant push notifications for logins and logouts on a Linux system with Pushover. You will need a Pushover account. Pushover is a proprietary service for smartphones, with a single-time purchase application which includes a generous free quota (never ever surpassed the “free” limits for any of my personal projects, and I receive sometimes more than 20 notifications per day). Register for a free account here.

Read More

Automating Proxmox with Ansible

  • 4 min read

Ansible is an automation platform for managing machines. When combined with Proxmox, it becomes a ridiculously powerful tool to orchestrate virtual datacenters.

Read More