We actually don't expect to exceed 5 total backend users across all subdomains... I just want to be able to login to sub1.domain.com and navigate over to sub2.domain.com and have it recognize that I'm already logged in. Currently Sitefinity ties the cookies to sub1.domain.com and as a result those cookies are ignored when I navigate to other subdomains.
If I do in fact have to login again on sub2.domain.com, I would prefer that it not force me to log out of sub1.domain.com, so I can switch back and forth, but as a side effect of your concurrent user restrictions, it won't let me stay logged in to both if I'm a backend user.
I see a few possible fixes for this:
1) We create a separate login for each backend user so that the concurrent user restrictions don't interfere with our ability to login to more than one subdomain.
2) Can sitefinity be configured to tie the cookie to the second level domain (.domain.com)? I know how to do this in the web.config for standard forms authentication, but sitefinity doesn't completely support this, and this obviously doesn't account for multiple second level domains pointing to the same installation. Let me be clear that I'm not looking for logins across domains... just subdomains on each domain, but the installation will need to host more than one domain.
3) Sitefinity recognizes that the user is trying to login twice from the SAME BROWSER and thus does not force the logout from the other subdomain.
Option #1 is easy for us, but is not preferred, and of course doesn't solve the problem of having to login to both subdomains. Option #2 would require a change to Sitefinity, or the ability to override and customize the approach used to set cookie domains. What are the chances of getting #2 or #3 in the near future? Seems that it would be easy for you to give us the option to tie the cookies to the whole domain. Thoughts?