The Original Plan for the Fellowship?

[Inziladun]

Originally Posted by Belegorn

Perhaps though I think he could conceal himself. He did infiltrate Dol Guldur.

Well, Sauron was in a sort of powered-down state then, and I don't think security was a very high priority in Dol Guldur. By the time of the War of the Ring it was a different story.