Apr 12Create a virtual Hacking Lab on Apple Silicon MacCreate a virtual Hacking Lab on Apple Silicon Mac When you are a cyber security consultant, a pen tester or even a system operator with technical interest then you want to perform attacks on systems to understand exactly how hackers work in real life and which vulnerabilities are exploited in order to take control of the system. If you…Hacking9 min readHacking9 min read
Feb 24Node.js series Part 4. Express Website with authentication and authorizationNode.js series Part 4. Express Website with authentication and authorization In a real production environment the app runs as a service in the background and this service is managed by a process manager. And the app should run behind a reverse proxy server. This reverse proxy server manage the TLS encryption, receives the requests from the client and route any…Nodejs27 min readNodejs27 min read
Feb 24Node.js series Part 3. The Simple Express Blog App with MongoDBNode.js series Part 3. The Simple Express Blog App with MongoDB In this Part 3 of my node.js series I rebuild the simple blog app from the last Part 2 so that a MongoDB database is used instead of a simple data file. To do this, a MongoDB must first be installed locally on the development system. We also use Mongoose…JavaScript30 min readJavaScript30 min read
Feb 23Node.js series Part 2. Create a Simple Blog App with Express.jsNode.js series Part 2. Create a Simple Blog App with Express.js Chapter 1: Introduction In Part 1 of my node.js series we have learned how to easily build a web server with node.js on-board resources. Lastly we installed the Express.js module and configured simple routes as application end points that respond to http client requests. In this part 2 I would like to take…Nodejs38 min readNodejs38 min read
Feb 11nginx reverse proxy server for node apps on Mac OSThis article was originally published on my blog Digitaldocblog. nginx is an HTTP server and can also be used as TCP/UDP proxy server. I use nginx mostly as reverse proxy to serve node apps from my local host via the reverse proxy. The reverse proxy is listening on port 443…12 min read12 min read
Published inPython in Plain English·Mar 4, 2022Python Classes and Objects in Depth: A Complete GuideA comprehensive guide on classes and objects in Python for beginners. — We can think of classes as blueprints for objects. Various object instances can be created based on one class blueprint and attributes as well as functionalities defined in the class blueprint will be passed as object properties after the object instance has been created. Classes are callable and whenever we…Python20 min readPython20 min read
Feb 12, 2022SSH public key authentication on a Ubuntu Linux SystemSSH public key authentication on a Ubuntu Linux System I have a new Linux server in front of me and I am able to login with user and password using ssh (Password Authentication). But before I login the first time I open the terminal on my local machine and create the ssh keys . PatrickMBNeu:~ patrick$ ssh-keygen -t rsa…5 min read5 min read
Published inPython in Plain English·Oct 21, 2021How to Install New Versions of Python on macOS Big Sur Using HomebrewHow to Install New Versions of Python on macOS Big Sur Using Pyenv Python 2 comes pre-installed with macOS. Python 2 is required by the operating system and managed by macOS. This system Python should never be touched. System Python is installed in the /usr/bin directory which is owned by root. This means all files and symlinks in the /usr/bin directory are system…Python6 min readPython6 min read
Published inJavaScript in Plain English·May 2, 2021Role Based Access Control using express-session in a Node.js appIn this article I refer to an application I created a couple of months ago. It’s about a booking system with which players can book ice-hockey trainings in different locations, the coach can confirm participation in a training session and a club manager can organize training sessions and bill the…Nodejs27 min readNodejs27 min read
Published inJavaScript in Plain English·Mar 19, 2021Create a Simple Blog App with Node.js and ExpressIn Part 1 of my Node.js series we have learned how to build a web server with Node.js on-board resources. Lastly we installed the Express module and configured simple routes as application end points that respond to http client requests. In this Part 2 I would like to take a…Nodejs27 min readNodejs27 min read
