Multiple subdomains with lets encrypt

Prior to support for wildcards I found it necessary to explicitly list each domain on a certificate in the form … -d example.com -d www.example.com -d blog.example.com -d www.blog.example.com … (which due to complexities in the odd mix of redirected domains I’m using worked best with the –webroot authentication). Thanks to Trojan’s explanation and documentation … Read more

How to convert a .cer to a .p12 file

What works for me dealing with Push Notification certifies has been: Open the certificate: open my_filename.cer and click “View Certificates” to see the certificate’s name Go to Applications -> Utilities -> Keychain Access Ensure you have selected the “login” keychain, not the “system” one (thanks to @Matt Flettcher ) Go to “Certificates” Look for the … Read more

How to convert .crt cetificate file to .pfx

I have solved this issue by converting this .crt file into a .pfx file using following method. To convert .crt to .pfx, we need CSA certificate (Private Key) provided by hosting provider. Below are the steps to convert this: Download and install OpenSSL software from below link based on your system type https://slproweb.com/products/Win32OpenSSL.html Run the … Read more

How do I use let’s encrypt with gitlab?

The by far best solution I was able to find for now is described in this blog post. I won’t recite everything, but the key points are: Use the webroot authenticator for Let’s Encrypt Create the folder /var/www/letsencrypt and use this directory as webroot-path for Let’s Encrypt Change the following config values in /etc/gitlab/gitlab.rb and … Read more

Wildcard SSL on sub-subdomain [closed]

A wildcard SSL certificate for *.example.net will match sub.example.net but not sub.sub.example.net. From RFC 2818: Matching is performed using the matching rules specified by RFC2459. If more than one identity of a given type is present in the certificate (e.g., more than one dNSName name, a match in any one of the set is considered … Read more

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