One of the most interesting features of AVI Network’s software-defined load-balancer is the native integration with Kubernetes platforms like Openshift. In particular, thanks to the ako operator, you can use AVI to expose Openshift applications, replacing the default router (based on HAProxy). Ako’s task is to configure, for each FQDN present in Openshift routes, a…
The software-defined load balancer by AVI Network allows, through the configuration of an Application Profile for a Virtual Service, to require an SSL client certificate: Using a specific PKI Profile it is possible to define which certificates will be accepted… for example you can configure your company’s Certificate Authority. This configuration however doesn’t allow more…
The Wio Terminal development board, from Seeed Studio, includes two grove ports: The grove system, by Seeed Studio, allows you to create electronic projects in a modular way, offering different modules (sensors, control boards…) that can be interconnected thanks to a standard connector and ready-to-use libraries. I tried to connect a GPS module (that makes…
This year in March, Massimo Banzi announced on the Arduino blog the production of a new revision (Rev.2) of the Arduino Yun board. In addition to some improvements on the hardware design, the new revision offers a complete update of the software side of the Yun, that is the Linux distribution (OpenWrt) running on the board. The original Yun was…
My smartphone is a Xiaomi Redmi Note 3 Pro, running the “Global” MIUI ROM. Some days ago I brought a SIM card from a new italian operator, ho-mobile, which allows to use the tethering feature of the phone to connect external devices to the Internet. I faced some problems before being able to use that feature… this…
Not everyone knows that IIS (Internet Information Services), the webserver included in Windows Server, offers the possibility to perform mutual authentication using SSL certificates. You probably saw that, within the site’s SSL configuration, you can require an SSL client certificate to the client that is connecting: in this case, IIS only verifies that the submitted certificate…
When I was analyzing the source code of an opensource software, I found an interesting technique to parse incoming data in a very efficient way, using a struct. This technique works if the received data has a fixed length and structure; for example it applies very well to data “packets”. When receiving, the program normally stores incoming data…
Today I faced a strange problem. I needed to import an SSL certificate in a java keystore, using the “classic” keytool command. I was sure that the format of the certificate was correct, but I always received the following error: java.util.IllegalFormatConversionException: d != java.lang.String The reason of the error is that – in the latest versions…
Today I faced a problem during the setup of a new application: if I opened a browser and entered the URL of the application, I got the following error message To be able to identify the root cause of the error, I found a new feature added in the latest versions of Microsoft IIS (Internet Information Services):…
Users of the Google Chrome web browser were able to display the SSL certificate of a website published via https protocol with a click on the address bar. In the latest versions, this functionality has been removed: You now need some additional steps: first open the developer tools (CTRL-Shift-I): then select the Security tab and click on View certificate:…