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)