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Showing posts from March, 2014

Certification authority and applying certificate to your domain

Generating a Certificate Signing Request and applying the certificate is  very frequent. Some companies require 2048 bit signatures. The following steps will create certificates with 2048 bit and later apply to relevant httpd (apache) server. Certificate Hierarchy Creating a CSR Values Country Name (2 letter code) [AU]:GB State or Province Name (full name) [Some-State]:London Locality Name (eg, city) []:Croydon Organization Name (eg, company) [Internet Widgits Pty Ltd]:My company Organizational Unit Name (eg, section) []:diaryfolio.com Common Name (eg, YOUR name) []:subdomain.diaryfolio.com Email Address []: Things to remember In most cases, ensure "Email address is left blank". But consult your certificate signing authority on this. Ensure "Common Name" matches exactly the "ServerName" specified in your httpd.conf (or httpd/conf/extra/httpd-ssl.conf) Actual Creation Below creates CSR with 2048 bit # CSR Key generation # Generate a

Dawn of Satellite Communication (Sat phones)

With the aftermath of MH370 flight, it has become clear how important is to deliver communication at a much robust & reliable levels. It is essential to use satellite communication as primary mode rather than tower/cell based telephony. inmarsat isatphone2 coverage Some of the ideas we want to explore are Crowd funded satellite communication Reduced cost of satellite based communication More competition among satellite based operations Apple and Google similar companies into Satellite phones manufacturing and publicity Inmarsat IsatPhone v2 Highly dependendable (reliable & robust) phones Satellite coverage upto 99.9% of land area

Chromecast vs Miracast and Miracast devices review

Many of you would have seen Google announcing "Chromecast" device across many countries. You might also have seen references of "Miracast" too in many blogs. So what are they and how they differ? Chromecast is a hardware device (dongle shaped) developed and marketed by Google. The device plugs into the HDMI port of your television/projector and, plays audio/video pushed via Wifi from a limited set of support devices and softwares/apps. The apps are limited and following link shows supported apps . Miracast is a wireless screen-mirroring/casting standard using Wifi. This can be equated to bluemooth media transfer which you might be familiar already. Miracast thus is NOT a hardware, not a software , but just a standard so that corporations/developers can build their devices (laptop, smartphone, tablets etc..) to push media content to your Television or projectors. Miracast can be better compared to Airplay rather than Chromecast . Thus Chromecast and Mi

Create your own United States Passport , India OCI photo using GIMP

Folks, this is in continuation to existing article of how to create UK passport photo (3.5cm x 4.5cm) using GIMP . Please read that article for full understanding of how to take photo/lightings etc. American Passport Photo requires 50.8mm x 50.8mm (2" x 2") photos. So do Overseas citizen of India application ( OCI photo ). As you are all aware, GIMP is very powerful too for image editing.  This article provides a very cost effective way to print   (2" x 2")  photos from nearby print enabled stores (like Boots in the UK etc..) for less than 30pence (40 cents approx) !!  For further details on United states photo requirement, please read this article Pre-requisite Read main article of taking photography and software requirements Step by step method of editing photo From your gimp “ Toolbox ”, click the “ Rectangular Select ” tool. (Ensure that the ”Fixed Aspect Ratio” is unticked).  Draw a small rectangle surrounding your face. In the left hand-pane, choos