DotNetNuke : How to do single sing-on to multiple portals

Question

I have a Dotnetnuke environment with multiple portals running at different subdomains (serviceA.company.com, serviceB.company.com). I can allow users the access to each portal by adding rows to UserPortals table, but since DNN uses full domain name in the auth cookie, the users need to log separately to each portal.

I'd like to have the system working so, that you only need to log in once on some of the portals, and wouldn't have to log in on the others. Is this possible?

Answer 1

This is possible by changing the web.config.

It's been a while since I did this, but I think you need to change the following

<httpCookies httpOnlyCookies="true" requireSSL="false" domain="" /> to <httpCookies httpOnlyCookies="true" requireSSL="false" domain="*.company.com" />

I might be off on the setting, but there is a way to do this in the web.config. Let me know if that works.