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Set virtual private networks LAN for qemu kvm suited for use with iptables dhcpd etc. Similar to vmware vmnets Imprimer

This script allow you to create virtual private networks for qemu, similarly to what is done in vmware. You can see the output of ifconfig below the script.

Mis à jour / Last updated ( lundi, 27 mai 2013 14:54 )
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Linux KDE skanlite has trouble changing paper size. Cropping a PDF file from legal size to letter size with pdfcrop. Imprimer

As noted on this forum, it seems rather hard to change the paper format when scanning with KDE skanlite. Here is the work around I have come up with:

Mis à jour / Last updated ( samedi, 18 mai 2013 04:27 )
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Asterisk FreePBX Security: FreePBX Backdoor Passwords Pose Asterisk Security Threat; Here is more robust solution to eliminate this possibility Imprimer
Écrit par Alain Côté   
dimanche, 01 mai 2011 16:44

We received an email from one of our provider pointing to a Nerd Vittles article warning about hidden admin passwords by which hackers could gain admin access to FreePBX/Asterisk installations granted such installations can be accessed through the Internet. You should always protect your FreePBX installation by forcing users that need to access it through the Internet to use a a VPN or SSH port redirection. This might be inconvenient for some customers so keep on reading...

 

Mis à jour / Last updated ( samedi, 07 mai 2011 18:09 )
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Problem updating to MyEclipse 7.5 on Slackware Linux - Look at ulimit -n - Too many open files - struts-config.xml changes to run under java 6 Imprimer
Écrit par Alain Côté   
jeudi, 22 octobre 2009 19:27

 

 

We have updated from MyEclipse 5.1 to 7.5. Here a list of the problems we encountered. Click below to read more...

 

Mis à jour / Last updated ( lundi, 30 novembre 2009 07:58 )
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Asterisk: optimizing a2billing mysql database with more than 1,000,000 rates in cc_ratecard Imprimer
Écrit par Alain Côté   
lundi, 05 octobre 2009 09:10

UPDATE: Areski Belaid, from a2billing, has just let us know that the index we are talking about will be added to the next a2billing release. We have been told that the index is already part of the source repository now as of rev 2419.

Like many other people, we have experienced performance problems with a2billing ( asterisk2billing ) when our cc_ratecard table reached 1,000,000 rows.

We have surfed around the internet to find solutions to fix this problem. We found several solutions, some suggesting to split the cc_ratecard table into multiple tables in order to fix things. Nevertehless, we figured that there must be another way and there was indeed another way. Click below to read more...

Mis à jour / Last updated ( mardi, 06 octobre 2009 16:03 )
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E. Coli Can Be Used To Clean Up Nuclear Waste Imprimer
Écrit par Alain Côté   
mardi, 22 septembre 2009 05:27

Cette adresse email est protégée contre les robots des spammeurs, vous devez activer Javascript pour la voir. writes

"Researchers have found that E. coli can be used to recover uranium from tainted waters and can even be used to clean up nuclear waste. Using the bacteria along with inositol phosphate, the bacteria breaks down the phosphate — also called phytic acid — to free the phosphate molecules. The phosphate then binds to the uranium forming a uranium-phosphate precipitate on the cells of the bacteria. Those cells can then be harvested to recover the uranium." What has made this 14-year-old process economically feasible is the use of inositol phosphate, which is a cheap waste material from the production feedstock from plant material.

Read more on Slashdot ;-)

 

Mis à jour / Last updated ( mardi, 22 septembre 2009 05:39 )
 
NVFax compiling problems with Asterisk 1.4.23.1 Imprimer
Écrit par Alain Côté   
lundi, 02 mars 2009 21:03

Changes to mutex usage in Asterisk 1.4.23 cause NVFax to cease to compile properly, see link below for updated files that compile with 1.4.23.1

Receiving and sending faxes with asterisk 1.4, NVFaxDetect, iaxmodem and hylafax.

 

Mis à jour / Last updated ( lundi, 02 mars 2009 21:18 )
 
Google to Offer Real-Time Stock Quotes Imprimer
Écrit par Apro+im   
lundi, 02 juin 2008 17:37

Today, Google announced that tutoriel photoshopGoogle Finance will report real-time prices on NASDAQ listed securities. While real-time stock price are not new, they are usually encumbered with subscriptions, legal agreements or pay software, making this one of the first (if not the first) free source for real-time quotes.

View annoucement hereparoles chansons

Mis à jour / Last updated ( mardi, 12 août 2008 18:11 )
 
TCP/IP communication over bongos ;-) Imprimer
Écrit par Alain Côté   
lundi, 02 juin 2008 12:11

Students at Algoma University have implemented TCP/IP over automated bongo drums. They achieved a blistering 2 bps data transfer rate, taking only 140 seconds to send a ping packet !

http://eagle.auc.ca/~dreid/

Mis à jour / Last updated ( lundi, 02 juin 2008 12:17 )
 
Supercomputer built with 8 NVIDIA GPUs Imprimer
Écrit par FnH   
samedi, 31 mai 2008 07:19

Researchers at the University of Antwerp in Belgium have created a new supercomputer with standard gaming hardware. The system uses four NVIDIA GeForce 9800 GX2 graphics cards, it costs less than 4000EUR to build and thanks to NVIDIA's CUDA technology it delivers roughly the same performance as a supercomputer cluster consisting of hundreds of PCs!

Mis à jour / Last updated ( samedi, 31 mai 2008 07:24 )
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Demande de recours collectif contre Bell Imprimer
Écrit par Bruno Guglielminetti   
samedi, 31 mai 2008 07:03

Après avoir déposé une requête devant le CRTC pour exiger que Bell cesse de ralentir délibérément le trafic Internet de ses abonnés, l’Union des consommateurs et une consommatrice de Montréal demandent maintenant à la Cour supérieure du Québec d’autoriser un recours collectif contre Bell au nom de tous les consommateurs du Québec abonnés, avant ou après le 28 octobre 2007, au service d’accès Internet ADSL de l'entreprise.

Voir l'article de Bruno Guglielminetti ici.

 

Mis à jour / Last updated ( samedi, 31 mai 2008 07:12 )
 
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