Importing a RSS feed from a Sharepoint subsite blog to the main page

I can not get the rss feed to work, when trying I get the error message:

Forbidden.

I have already done a lot of research around this and tried Xml without any result. Worth mentioning is that any external RSS works perfectly fine.

My question is simply, is there a way around this? Except for installing kerebros that would be, wich is an option I have found.

I have an idea of perhaps putting the rss from SharePoint on an external site and then pick it up from there to the main page, have anyone attempted this?