Couldn't it be possible that all these servers share the same authentication mechanism, i.e. only usernames and passwords, and do all their local stuff on their own (roles, possible actions, homepages, etc...), in one word (ok, two) : Centralized Authentication
A problem would be: if a user has advanced rights on site A and limited rights on site B. So there must be an automatism which first checks the local acl and then the global one. Another one: What if I would like to register on site A but not on site B? -------------------------------------- Goeldi.com - Internet Services -------------------------------------- www.zopehosting.ch www.goeldi.com web@goeldi.com Tel +41-61-7330555 Fax +41-61-7330556 --------------------------------------