Until recently only a few owners could afford servers have an SSL certificate: it was more added expense to the purchase of the domain, server maintenance etc ...
But since 2015, there will be no possible excuse for all servers that use the https protocol by the Electronic Frontier Foundation (EFF).
The nonprofit foundation EFF has partnered with companies like Mozilla, Cisco and Akamai to offer HTTPS / SSL certificates free for those servers running on the Internet from the summer of 2015, in order to encourage people to encrypt User connections to their websites. So far, the change from HTTP to HTTPS was a nuisance more and was an additional cost and were also difficult to install and maintain. But after the launch of this new free certification authority (CA), called Let's Encrypt, will be even easier for people to their websites are encrypted and secure HTTPS.
How it will work since the summer of 2015? Very simple, but we'll have to run the following commands to our server:
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1 $ Sudo apt-get install lets-encrypt
2
3 $ Lets-encrypt example.com
And it will. We secured our server connections with HTTPS. Really simple and absolutely free, just wait a few more months.
All those who wish to test the service in advance you can go to GitHub and will download the code available, but still would not be appropriate to use in production servers.