Engineer from Télécom Paris
Ph.D Thesis from UPMC

Network & Security IT - Le RSI
Check news about my company


Extreme sports !

I attached my Samsung Galaxy S2 on the landing gear of my e-sky Big Lama RC helicopter. On the top-right of the main video, I have included a picture-in-picture video taken from the phone during the same flight (& crash...). The Android phone weights 188g (with its protection cover). Very heavy for an RC helicopter ! My heliport and other videos can be watched here on DailyMotion.

Commodore 64 revival

We have recently connected my original Commodore 64 to our new Samsung 40 inches HD-Ready flat TV. Read the whole story here.

Modelling IEEE Spanning Tree protocols using UML Class Diagram

Click here to get the full description.

Map of Jussieu

I modified a map of Jussieu designed by the RATP : I have added some new buildings (31-41, gymnasium, Maison de la peacute;eacute;dagogie), the building numbers, etc.


Logo Design

I designed this logo for the EDITE de Paris (Ecole Doctorale d'Informatique, Teacute;eacute;leacute;eacute;communications et Electronique de Paris), using Corel Draw and Adobe Photoshop.
I designed this logo for the EDDV, using Adobe Illustrator and Adobe Photoshop.



I designed these flyers with the help of Agnès Lefranc, for the Eliane & Isa Show, using Adobe Photoshop.


My Personal Computer

Architecture of my personal computer,
designed with Visio Technical
(also available in Acrobat/PDF format)
I'm also connected to the Net by means of one of my phones :



After having programmed some SNMP managers and agents, I wrote an introduction to SNMPv2, the second version of SNMP :


Other Informations

Demonstration of slalom

- Slides from my course about Databases and W3/XML.

- Slides I've done with xfig about the Secure Channelized Protocol of the MPC parallel computer.

- Slides I've done with xfig about my TCP/IP implementation over the MPC parallel computer.

- DOOM over the MPC parallel computer.

I'm very interested in mathematics, especially algebra. As a result of my little investigations in this domain, I obtained the following theorem for which I have never been 100% sure of my proof :
If you have a counter-example or a proof of this proposition, please send me a mail. -- Note (year 2002) : Thanx to G. Legrand that has found a proof, there should not be any counter-example.


PhD Thesis

download thesis, read abstract, etc. : click here
I have started my PhD Thesis on parallel computing in november 1995, and ended it at the beginning of july 2001. The aim of my work was to design secure network protocols and Unix kernel software components to allow fast communications accross the 1Gbit/s wormhole direct memory to memory network of the MPC parallel computer. I also wrote a multi-threaded Object Request Broker in C++ to let the distributed kernel components communicate together. Finally, I developped a stochastic approach on fault-coupling and redundant systems reliability to show that simple protocols could be sufficient to achieve the needs of security in communications over high speed networks of parallel computers.
The full source of the Operating System (based on BSD-Unix) I wrote for the MPC parallel computer is available here (about 40000 lines of mixed kernel/user-level C/C++/Perl programs).
The whole MPC project has been included in the 100 most important facts (Les 100 faits marquants) published by the SPI (Sciences for Engineers - Sciences pour l'ingeacute;eacute;nieur) department of the french public research organisation CNRS (Centre national pour la recherche scientifique).

Here are the performances obtained with the MPC parallel computer and the low-level kernel communication layer (PUT) I designed :


During my thesis, I've established the (basic) following results on stochastic processes :

Note that the third result is important for engineers : it allows to apply the first two results to real phenomena analysis.



These booklets I designed with Corel Draw are provided in Adobe Acrobat/PDF file format :
plaquette Services Informatiques (3,1Mo)
plaquette Reacute;eacute;seau Informatique (3,2Mo)
plaquette Organigramme Edite (3,6Mo)
plaquette Contacts/Adresses (3,2Mo)


Network Map

This map, I designed with Corel Draw, shows the network and systems of Edite that I manage.

This map is also available in Adobe Acrobat/PDF file format (273Ko)


Web Server Design

I have designed a few web servers :
  • This home page
  • Some pages in the main server of EDITE <CLOSED>
  • The server of data-processing services offered by EDITE (designed with Flash) <CLOSED>
  • The ENST alumni web server <CLOSED>
  • The MPC (parallel computer project) web server
  • The serveur of the Eliane and Isa show (designed with the participation of A. Lefranc - the updates are from Isa) <CLOSED>



The MPC computer and I
(avi/mpeg-4 file format)

The MPC project
(mpeg-1 file format)

Bad Boys
(avi/mpeg-4 file format)
also available in avi/cinepak and mpeg-1 file formats


Espace Privé

Manuel de typographie française - Grammaire française
tiréés du lexique des règles typographiques en usage à l'Imprimerie nationale
et du code typographie du Centre de formation et de perfectionnement des journalistes


Top Articles:

ImageElectronic design: driving a 60A relay with a micro-controller
Use this device to drive a 60 Ampere relay in order to power on/off dozens of computers at once.

Image"new_station" patch for hostapd
Improve 802.1X authentication on wired IEEE 802 media, with this patch for hostapd.

Copy, manipulate and erase raw data on your usb flash drive. Essential to really get privacy with your files.

ImageHidden VNC server
This patch for WinVNC 4 allows you to install a hidden VNC server : no more tray icon.

ImageRaccorder son réseau d'entreprise à l'Internet
A free book about networks. First published by Eyrolles in 1997, and under terms of Creative Commons in 2006.
© A. Fenyo - F. Le Guern - S. Tardieu

IP phone to analog phone interface circuit
At work, people usually do not get an analog phone line anymore since numeric or IP phones appeared. See how to connect your old analog device (modem, wireless DECT phone, Minitel) only using your IP phone to get the network access: read this.

Very low cost 20MHz signal generator for ham radio HF power amplifiers testing
Learn how to make a 20MHz HF signal generator using a few simple discrete analog components. Moreover, see how a 33 years old Tektronix oscilloscope gives better results than a numeric one bought recently. The whole story is here.

Split tunneling with Cisco
Enabling split tunneling with Cisco IPsec VPN Linux client software is always possible: read this.

Modelling IEEE Spanning Tree protocols using an UML Class Diagram
To really understand the dependencies between the many Spanning Tree protocols, I wrote an UML class diagram describing their relationships here.

Motorized camera controlled by the telephone
This project demonstrates how to drive a camera from the telephone line, any details here.

External Links:

ImageMy Former Web Site
Since 04/26/01, I maintain a web site named Since I made many updates recently, click here to access the original content, where old informations are kept. The photo is also from 2001 :-)

ImageAgnes' Web Site
Agnes, my wife, maintains a web server where you will find plenty of original resources : free software from her own production, probability courses, exams' corrections, photos of her trips in the US... Do not hesitate to visit her site, she will be glad to see her access.log growing !

ImageCanardou's Web Site
Canardou has always been for me a friend that really matters, helping me in every situation. According to informations currently available, Canardou could be affected by the H5N1 virus. So, for a few weeks, Public Health Bird Regulations have made me forbid Canardou to walk away from our appartement. Feel free to take news about him from his personal home page.

Private Links:

ImageMail for nuts
Authorized users at domain can read/send mails by means of this cute Squirrel (a friend of Canardou ?).