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Network protocols, design, analysis and forensics articles

Technical articles that will guide you through the bits and bytes of data networks, network security, wireless and cellular, network analysis with Wireshark and more. Enjoy!

Introduction One of the most important and most frequently overlooked topics in IT planning is cost, specifically how to pay for exactly what you need and nothing more. The subject

Data Network Design and Information Security Planning

Introduction Over many years of designing communication networks and network security architectures, I have consistently found that a structured, methodical planning process is the single most important factor in project

Data Networks Design

This article outlines the essential stages of communication network design, covering how to define requirements, design network architecture, and detail each step for effective project management.

Analysing Suspicious Traffic Patterns

In this article, we talk about traffic patterns and how to discover suspicious patterns, explaining he should "good" traffic patterns and how to identify patterns that should be carefully checked.

What are TCP Resets?

In this article, we talk about TCP Resets, why they happen, what is considered to be "normal" behavior and what is an indication of a potential problem.

Networks Optimization

Data network optimization is about adapting the network, technically and economically, to the organization's requirements, and you will be surprised how your network can be improved.

TCP Retransmissions

In this article, we talk about TCP retransmission types, what they indicate, and whether they are a problem or normal network behavior.

TCP Zero Window

Here we talk about the TCP sliding window mechanism, Zero-Window and Window-Full symptoms, what we can learn from them, and when and why they indicate slowness problems.

Network Automation

Design and implementation of migration to autonomous networks, from the first levels of event-reaction, through Python with netmiko/ncclient and to the SDN and other software driven networks.

Network analysis

The network is slow? users are disconnecting from the network? suspected bottlenecks? Using SNMP, Telemetry, Wireshark, and other smart tools we will help you to solve your network issues.

Networks Security

There are many risks that your network is exposed to, from simple DDoS and malware's to smart spoofing and smurf attacks, we help you design and implement a network protection

Wireless Networks and Wi-Fi 6

In this article, we talk about the principles and operation of wireless networks, with emphasis on the new WiFi-6 (802.11ax) standards, along with design and implementation guidelines.

IoT Networking

In this article, we talk about communications protocols and methods used in IoT networks, including Wi-Fi and cellular implementations, LoRa and LoRaWAN, 802.15.4, ZigBee, and more.