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Thursday, October 9, 2025

Why does a shut down Dell server consume 50W?

Question: Why does a shut down Dell server consume 50W?
 
Short Answer: Because some hardware components still consume power when the server is not disconnected from power. 

Longer Story with details 

I have Dell PowerEdge R620 with iDRAC7 in my home lab and here is the home power consumption in two scenarios

  1. shutdown server still connected to power (531 Watts)
  2. server fully disconnected from the power (475 Watts)

Scenario 1: shutdown server still connected to power

 
Scenario 2: server fully disconnected from the power

The difference between above two scenarios is ~ 50W. Why? 

Let's dive deeper. 

Sunday, September 28, 2025

FortiGate Configuration Backup via REST API

One of my customers would like to backup FortiGate configuration as part of DRBC (Disaster Recovery and Business Continuity) Solution.

FortiGate supports REST API so it is great solution to periodically get configuration, store it into some file directory and leverage Veeam Backup and Replication solution to backup FortiGate configurations in with company standard protection process. 

In this blog post I document all customer's specific design factors and also the solution prototype how to fulfill these factors and backup FortiGate configuration into file directory.

I personally prefer *nix way over Windows, therefore, I will leverage Linux Docker and PowerShell to get information from FortiGate security appliance and put it into file directory. Docker solution could be leveraged on Windows operating systems as well.

If you are interested in details, read on.

Thursday, September 25, 2025

David Pasek’s version of Greg Ferro’s 11 rules of design

Design documentation is not literature; it is a technical tool. The goal is clarity, precision, and usability. Here are 11 rules to guide you when writing a design document.

Greg Ferro's Eleven Rules of Design Documentation

Here is Greg Ferro’s approach to designing network design documentation. The “world” of networks is too big and varied to have only one document to cover more than one or two projects, but here are some rules to write a detailed Design document.

Wednesday, September 24, 2025

My IT Infrastructure Tips & Tricks - tmux

tmux is a terminal multiplexer. It lets you switch easily between several programs in one terminal, detach them (they keep running in the background) and reattach them to a different terminal. Tmux is available on Linux and BSD systems.

Let's dive into TMUX usage ...

Saturday, September 20, 2025

ZeroEcho: Open Source, Future-Ready Cryptography for Java

What is ZeroEcho?

ZeroEcho is an open-source cryptography toolkit for Java. It builds on trusted providers such as Bouncy Castle (especially for post-quantum algorithms) and organizes them into a coherent, safe, and scriptable framework.

It is designed for developers, researchers, and practitioners who want to build cryptographic workflows that are:

  • Secure today with classical algorithms, and
  • Resilient tomorrow with post-quantum standards. 

Get Started

📂 Repository: https://gitea.egothor.org/Egothor/ZeroEcho

📖 Documentation: https://www.egothor.org/javadoc/zeroecho/lib/

Source: https://www.linkedin.com/pulse/zeroecho-open-source-future-ready-cryptography-java-leo-galambos-pgu2e/