Zodiac-FX Switch OpenFlow Throughput

Zodiac-FX Switch OpenFlow Throughput
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 a Raspberry Pi (single-board computer) that ...

Syslog Server for your Fortigate® Firewall

Syslog Server for your Fortigate® Firewall
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 server on your local machine ...

SDN with Raspberry Pi and Zodiac FX

SDN with Raspberry Pi and Zodiac FX
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 a Raspberry Pi, which runs ...

IP Address Calculator

IP Address Calculator
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 network, and the first, last ...

Behind the Wall: The Internet Is The Computer

Behind the Wall: The Internet Is The Computer
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 such as the Cloud, Big ...

Behind the Wall: The Internet is Made of Light

Behind the Wall: The Internet is Made of Light
(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 data over longer distances and ...

Behind the Wall – The structure of the Internet

Behind the Wall - The structure of the Internet
  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 owned and managed by the ...

Behind the Wall – What is the Internet Anyway?

Behind the Wall - What is the Internet Anyway?
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 ago, but the technologies that ...

Firewalls

Firewalls
Firewalls are the primary defense mechanisms against network security threats. A firewall is a system that can be positioned between any two networks to control the passage of data traffic in and out of these networks. Typically, the two networks are the internal, trusted, network and the Internet [1]. Firewalls have evolved since their inception ...

Wireless will become the primary LAN technology

Wireless will become the primary LAN technology
The mainstream consumer market started seeing Wi-Fi products based on IEEE 802.11ac standard in 2013. The standard is the fifth generation of Wi-Fi networking technology that promises more bandwidth to users at home and the office. The new Wi-Fi brings new improvements to wireless networks including offering 1.3Gbps of bandwidth (in the so-called Wave 1) ...