Author Archives: Maen Artimy

Controlling Zodiac-WX with Ryu

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The Zodiac WX from Northbound Networks is Dual-Band AC1200 AP that includes 2 Gigabit Ethernet ports and support for PoE. It also integrates Zodiac OpenFlow® engine with OpenWrt operating system. The Zodiac WX works with any standard OpenFlow® 1.3 compatible controller and appears to the controller as a 65-port Ethernet switch. This post explains how… Read more »

Zodiac-FX Switch OpenFlow Throughput

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The Zodiac FX from Northbound Networks is an OpenFlow switch designed to deliver the power of Software Defined Networking to researchers, students, and anyone who wants to develop their SDN skills or build applications using real hardware. In a previous post, I described the process of connecting the Zodiac FX switch with… Read more »

Syslog Server for your Fortigate® Firewall

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Are you looking for lightweight Syslog server to test your Fortinet®‘s firewall installation? or Is your firewall missing a local disk to save the logs? If your answer is ‘Yes’ to either question, then you may want to check out this Python script at GitHub. The script starts a syslog… Read more »

SDN with Raspberry Pi and Zodiac FX

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Experimenting with Software Defined Networks (SDN) on real hardware has become a lot easier since I discovered the Zodiac FX switch from Northbound Networks. This 4-port switch supports Openflow v1.0 and v1.3, and it supports many Openflow controllers. This post describes the process of connecting the Zodiac FX switch with… Read more »

Arduino Weather Station

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I’ve built a simple indoor weather station using a Temperature and Humidity sensor and an LCD screen. Here are the instructions on how to build it yourself: First, you need the following components Stanadrd 16 x 2 Character LCD Display Module DHT11 3-Pin Digital Temperature Humidity Sensor Module 10k Ohm… Read more »

IP Address Calculator

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This is my latest Android App and the first to be published in Google Play. The App provides you with basic information about any unicast IPv4 address you enter, including: the network id portion of the IP address given the mask length, the number of usable host IP addresses within the… Read more »

Behind the Wall: The Internet Is The Computer

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Back in the eighties, John Gage of Sun Microsystems coined the phrase, “The network is the computer.” Today, the services made possible by the Internet and our use of them as individuals and organizations affirm John’s statement perhaps in ways they were not even imaginable three decades ago. Technology trends… Read more »

Behind the Wall: The Internet is Made of Light

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(this is the third post of the series “behind the wall”. Here are the first and second) The Internet is made of light. That is because the Internet’s backbone is mostly made of optical fibre links that guide light pulses representing data streams.  Optical fiber technology permits the transmission of… Read more »

Behind the Wall – The structure of the Internet

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  The Internet is a network of networks. Every machine that is connected to the Internet is part of a network. At home, you are likely connected to an Internet Service Provider (ISP). At work, your computer is part of the organization’s local area network (LAN), a network that is… Read more »

Behind the Wall – What is the Internet Anyway?

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It started when my cousin asked, “So what exactly DO you do for a living?” “Do you have a computer tethered by a data cable to the wall?” I responded. “Yes,” “Well my job is to build what goes on behind the wall.” This conversation happened just a few years… Read more »