SSL
Check https connection
openssl s_client -connect wiki.bitarus.allowed.org:443
Multiple SSL nginx
http://nginx.org/en/docs/http/configuring_https_servers.html
Multiple SSL Apache
https://wiki.apache.org/httpd/NameBasedSSLVHosts
As a rule, it is impossible to host more than one SSL virtual host on the same IP address and port.
It is acceptable to use a single SSL configuration for several virtual hosts. In particular, this will work if the SSL certificate applies to all the virtual hosts. For example, this will work if:
All the VirtualHosts are within the same domain, eg: one.example.com and two.example.com. You have a wildcard SSL certificate for that domain (one where the Common Name begins with an asterix: i.e *.example.com)