When you want to add a forum just choose "Redirect forum" as forum type and enter the url of your BBB blog at the bottom of the same page where it says: "Redirect URL"

I do not know if its possible to automatic link your blog to the forum when new posts are made except if you manually add your link from the forum to each post in your blog.
WarezFreaks Reviewed by WarezFreaks on . IPB forum and Redirection links. Hey, I want to know about this. Say I have a IPB forum on aaa.com and blog on another domain name bbb.com I have created forum with categories and stuffs.. bbb.com is focused on one category only which aaa.com forum is not having. Rating: 5