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Author: Radovan Brezula

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  • Radovan Brezula
  • Scripting

From Classroom to Community 2 - ROT13 and Math Quizzer

  • Radovan Brezula
  • October 1, 2025

I am so happy the first post about sharing my Python scripts got such a […]

  • Scripting

From Classroom to Community 1 - Sort and Game

  • Radovan Brezula
  • August 1, 2025

I am a former high school teacher with a passion for networking and programming, especially […]

  • News

Professional Corporate Network Simulation in Packet Tracer

  • Radovan Brezula
  • April 12, 2025

I am pleased to introduce the work of one of my students, who developed a […]

  • IOS

IPsec VPN Cisco and StrongSwan

  • Radovan Brezula
  • February 2, 2025

In a previous tutorial, we configured an IPsec tunnel between a Cisco 1812 router and […]

  • Cisco
  • IOS

IPsec VPN between Cisco and GreenBow

  • Radovan Brezula
  • January 1, 2025

In a previous tutorial, we explained how to configure a legacy Cisco 1812 router for […]

  • Cisco

Configuring the Cisco Aironet AP 1142

  • Radovan Brezula
  • December 1, 2024

The Cisco Aironet AIR-AP1142N-E-K9 is a versatile, legacy dual-band access point that uses 802.11n (Wi-Fi […]

  • Debian

Wake on LAN: Linux, Windows and Routers

  • Radovan Brezula
  • November 1, 2024

Wake-on-LAN (WoL) is a feature that lets you turn on computers remotely. This can be […]

  • Proxmox

Dell Optiplex 7050 SFF Upgrade for Proxmox

  • Radovan Brezula
  • October 1, 2024

The Dell OptiPlex 7050 SFF is a capable machine for virtualization thanks to its Intel […]

  • IOS

Cisco 1812 as Home Router

  • Radovan Brezula
  • September 2, 2024

This lab delves into configuring a Cisco 1812 router, a legacy device with 100 Mbps […]

  • Raspberry Pi

Debian Installation on Raspberry Pi

  • Radovan Brezula
  • August 6, 2024

This guide demonstrates how to install Debian 12 (bookworm), also known as “bookworm,” on a […]

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BGP
Intelligent Routing Platform

BGP management
Automated BGP Network Management

What is NetFlow?

NetFlow
NetFlow vs. sFlow vs. IPFIX vs. NetStream. Network Traffic Analysis and Monitoring.

BGP Security: BGPsec Protocol

BGP protocol
BGPsec is an integral part of the BGP protocol, and thus, BGP routers must do the…

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