为多个网站设计单点登录

Question

I have three websites, that do three separate things, but I would like to implement single sign-on for users to access to all three sites. The sites do not share a db, and two are not in the same domain, also two are php based and one is an ror website.

Answer 1

We have done the same with Central Authentication Service (http://www.jasig.org/cas) Rails has both CAS server and client

ruby CAS server is here (https://github.com/gunark/rubycas-server)

ruby CAS client is here (http://code.google.com/p/rubycas-client/)

and in theory CAS server and clients can be different languages (Like CAS server is ruby and CAS client is php vise versa...)

and also ruby CAS has a very helpful community through groups

hope this helps

cheers

sameera