Single Sign-In for multiple VBs?

[wbraun]

Hi,

I run multiple vbulletin's and am looking for a possibility to realize a single sign-in for all boards. 1x Login and logged into all 5 boards. I want to keep a sync'ed user-base. Does anyone know any good approach to realize this?

I kept browsing vbulletin.org/com vbhacks-germany.com, ... for hours without finding any really useful hint how to realize this.

Features I want to realize:

- single sign in into all boards
- new user registration creates user on all boards
- user profile change updates user profile on all boards
- admin changes on a user also are done on all boards

Maybe someone has a good idea.

ty