Is there a way to use a authentication on many applications?

[Rodrigo Cesar]

I have asked this question before but it seems that it disapeared (i could no find it,) so forgive me if you seing it again, 

well the question is, i want to divide my program in a group of applications, but i wanted the same authentication to work

on all off them (the user logins on main app and it gives the credentiais to others), there is a simple way for doing thar?

or should i ignore web2py auth and write my own? 

[Niphlod]

you can either go with CAS or specifying  the same auth database on all of them. If you want a user logged to "main" to not be asked credentials when he accesses app "subapp", you can share the sessions using the masterapp argument

It's all documented in the book.

http://web2py.com/books/default/chapter/29/09/access-control?search=cas#Central-Authentication-Service

http://web2py.com/books/default/chapter/29/04/the-core#session