Articles | Notes | Tips | Tutorials
Updated: 04/26/2025
OAUTH2 and OpenID Connect are popular Authorization and Authentication mechanisms and a lot of confusion around these standards.
In this article, we will unravel the OAUTH2 and OpenID Connect standards through hands-on demonstration of the various flows using the Keycloak OAuth Server.
Here is the link to the article:
Understanding OAuth2 and OpenID Connect
Enjoy 😉 !!!
In this article, we will setup and demonstrate the two Port Forwarding options (Local and Reverse) on Linux using a single binary executable called ‘Chisel‘. Here is the link to the article:
Enjoy 🙂 !!!
In this article, we will introduce the concept of Zero Knowledge Proofs (ZKP) and look at one of the earlier ZKP schemes proposed by Amos Fiat and Adi Shamir, along with a simple proof-of-concept.
Here is the link to the article:
Fiat-Shamir Zero Knowledge Proof
Enjoy 🙂 !!!
Just recently experimented with the use of Pi-hole (running on an ARM based SBC) as the Network-wide Ads and Internet Tracking blocker.
This article provides the step-by-step instructions to get Pi-hole running on Docker.
Here is the link to the article:
Pi-hole using Docker on ODroid-C2
Enjoy 🙂 !!!
In this article, we will introduce the mathematical concept behind Elliptic Curves with some examples and its usage in Cryptography.
Here is the link to the article:
Enjoy 🙂 !!!
In this article, we will setup and learn how to work with the Nmap network scanning tool on a Linux host and explore the core concepts. Here is the link to the article:
Enjoy 🙂 !!!
In the traditional Unix world, the typical way to grant a command (executable file) the superuser (root) privileges is to enable the SUID bit and have it owned by root. Look at the permission of the ping command in Linux – it does *NOT* have the SUID bit set and yet is able to open a raw socket connection … curious to know more ???
Here is the link to the article:
Enjoy 🙂 !!!
Wish you all a Happy, Healthy, Prosperous, & Peaceful 2021 …
In this article, we will setup and demonstrate the HashiCorp Vault for managing and controlling access to sensitive enterprise assets such as Passwords, Access Tokens, Certificates, etc., on a 3-node VirtualBox based VMs. Here is the link to the article:
Enjoy 🙂 !!!
In this article, we will setup and learn how to work with the Linux iptables firewall using 3 VMs on a Linux host and explore the core concepts. Here is the link to the article:
Fundamentals of Linux iptables Firewall
Enjoy 🙂 !!!
In this article, we will setup and demonstrate the different SSH Tunnel options using 3 VMs on a Linux host and explore the core concepts. Here is the link to the article:
Enjoy 🙂 !!!