Question about using vBulletin with an ASP.NET based website

How to integrate the vBulletin forums users with an existing ASP.NET site that has its own users and login, and to ma开发者_运维知识库intain the session between the two sites, so when a user logs in, he/she stays logged in when browsing the forum?

It's possible, but efforts doesn't worth it I'd say.
Too much of dirty handwork while you're looking for a few mouse clicks - dont' ya? ;)

Either forget cross-site authorization or find yourself NET-based forum.

Install the vBulletin LDAP auth plugin, and get someone from the ASP admin side to setup LDAP server - whatever it may authenticate against - a custom DB, or AD.

Done.