Hi, I don't know if this is a drupal issue, so I apologize if this request is made in the wrong place.I have my website, www.example.com. I create a subdomain and it is properly running, with help of domain module. http://subdomain.example.com
this subdomain is a service for a customer that has his own website, not with drupal, but wants a particular service and I make it for him. He wants that: http://subdomain.example.com is accessible only from its link in his homepage, not from external user. In a few words, the subdomain should work only if the visit comes from his website. Do you think that a similar thing have sense? I still didn't give any answer about it, because it appears to me a strange request and I don't know how to realize it.
What do you think about it?
ps: I really thank this group because every time I made a question I always had a good feedback, sometime I forgot to thank people.