python-rrdtool setup
Mot-clé - Computing
cron.hourly does not run
exoscale on LaMetric
The Imitation Game
Je vous encourage à voir ce film excellent, qui retrace les événements clés de la 2ème guerre mondiale, ceux liés à lutte entre cryptographes. Alors que les nazis avaient une avance remarquable (Enigma), les alliés luttaient pour casser un code très complexe. Alan Turing a été l'un des membres clés […]
Intelligence Artificielle dans Forum
Hier soir, la RTS a questionné Antoine Blondeau sur le thème de l'intelligence artificielle. L'interview donne de bonnes réponses sur les questions liées à l'avenir de la technologie. Quelques liens : Ecouter le podcast de l'interview Site de la société Sentient Technologies […]
Poor internet performance
Internet Service Provider : Swisscom Subscription : inOne Internet S (the smallest access available) Router : internet-box 2 Commercial Profile : 40000 down / 8000 up Kbps Technical capacity : 40871 down / 10939 up Kbps Copper line VDSL2 line length : 1132m Line Attenuationn TX : 35.9 dB Line […]
Speaking about A.I.
Jeudi dernier, j'ai honoré l'amicale invitation de l'Association API-NE (Association des Professionnels de l'Informatique, Neuchâtel) et durant une grosse partie de la soirée, j'ai évoqué le thème de l'intelligence artificielle.
Let's test OpenDNS
OpenDNS - can this really work?
This morning, I was at CISCO office for a security training and I was told about OpenDNS (now acquired by CISCO). This is public DNS servers that allow you to filter bad sources, based on their names.
This sounded a bit strange for me. Why trying to protect people by using DNS? Is that really efficient? I ask this question, because DNS is at level7 (application level in OSI model).
I would prefer an IP reputation based system, instead playing with names (as an IP could be registered as multiple names!). But anyway, that's finally one more protection and I decided to give it a try.
I moved to LetsEncrypt
In December 2016, I wrote a post on this blog about StartCom SSL free certificates. StartCom (and WoSign) aren't trusted anymore. If Internet Explorer and Edge are trusting StartSSL root certificates, this is not the case with Google Chrome. I had to move to another product. Letsencrypt is the […]
Make sure your Python code is great
Cavelink - how to export your data
Using some free time during the holidays, I created a component to extract Cavelink data, by parsing the webpage. It's written in Python and available on GitHub. A cavelink station can be connected with a couple a sensors, to get information from the cave (i.e. temperature, water level). The upper […]
About StartCom SSL free certificates
This website has its trafic encrypted with a StartCom Free SSL Certificate. As I recently renewed a certificate, I got this information: Notice: 1. Mozilla and Google decided to distrust all StartCom root certificates as of 21st of October, this situation will have an impact in the upcoming release […]
Application Testing
Great Regex website
There are many website related to RegEx (= regular expressions). But this one helped me a lot because the test feature is not limited to Javascript capabilities (i.e. to test positive & negative lookaround expressions). If you need some great help in validating things, just go to regex101.com !
Learning Linux
Linux and OpenSource software are driving the cloud technologies. A few examples can be found in this post, where I'm listing the products and technologies considered in the last training I attended. So, I'm learning Linux, in order to better compare, understand the differences between […]
Achievement Unlocked : Cloud Infrastructure !
Les infrastructures orientées Cloud sont certainement un thème passionnant et très complexe. Par intérêt personnel, pour l'envie d'en savoir davantage et pour ne pas rester en arrière, j'ai suivi une formation d'introduction, qui traitait des sujets suivants : Infrastructure as a Service Platform […]
Datacenter et cloud en Suisse
Reportage intéressant sur le thème du Cloud, produit par la RTS. On y voit quelques images du Datacenter de la société DELTALIS... qui héberge (une partie de) ce blog. Lien : Le reportage RTSun - Secret Bunker Deltalis et Datacenter DK2 […]
LetsEncrypt : la sécurité pour tous !
Toujours grâce aux excellents collègues d'exoscale, j'ai récemment appris l'existence de LetsEncrypt, une nouvelle CA (=autorité de certification), gratuite et automatisée !
Monowall is now frozen
Le projet monowall est désormais terminé. Je viens de prendre connaissance de l'annonce.
J'ai beaucoup utilisé Monowall, évidemment comme firewall mais également pour passer ma certification IPv6 et aussi comme émulateur WAN, à des fins de tests.
Ce firewall demandait un configuration hardware minimaliste (j'ai utilisé pcengines.ch) et m'a offert la possibilité de :
Moving to TLS and exoscale
It was certainly the time to secure this blog and turning to TLS. This is now effective.
But it's also the time to give some information about "what's that site running ?".