title: implementing SSO across subdomains in joomla
body: <p>First of all i have done numerous reading on session cookies, joomla sessions and logins but i don't seem to find the solution or at-least dont understand how it works.</p>
  
  <p>I have three joomla websites with one of them being the main domain and the rest subdomains.</p>
  
  <p>I want to be able to automatically logged in to my subdomains when i login to my main domain.</p>
  
  <p>I have done the following so far,</p>
  
  <p>All three websites share user info tables (users, groups, access levels).
  They share the same secret value.
  The cookie domain in all three websites is .domain.com.</p>
  
  <p>but when i login to my main site i dont seem to be logged in to the subdomains.
  I have tried sharing the session table with no success.</p>
  
  <p>what am i missing here ?</p>
  
  <p>P.s - I have tried jfusion, it works, but i am not satisfied with the function as i dont see the point in using curl to submit form in subdomains.
  I have used multisites SSO plugin from jms2win.It is basically designed to work on different domains than among sub domains. and it didn't work in my case too.</p>
  
  <p>Thanks.</p>