Creating a certificate has been successful after some little difficulties, the site is now online.
I have used the instruction and the corresponding script:
letsencrypt-nosudo
In doing so, I have noticed that some smartphones (Android and iPhone 4 S iOS 7) have problems with the certificate.
I get the following message on the Android (in German, I try to translate):
“(The site) is not trustful!
You try to get to www.hn-websolutions.com, but the server uses a certificate that originates from a person who is not trusted by the operating system of the computer. A possible reason is that the server has created own security information which is not trusted as identity, or that a hacker tries to catch your communication.
Do not go on if you get this warning on this website for the first time.”
This is an error message that means that the certificate is not to be trusted.
On the iPhone, I got a message, that the identity of the server can not be verified.
On the desktop, there are no problems. Only on the smartphone.
This gives you very handy information about the SSL-status of your webserver, although not everything should be interpreted as shown. (For example, they penalize 128 bits AES-GCM for being ‘just’ 128 bits, although this is safer than 256 bits AES…)