1. A method of suggesting links for a search query in an enterprise system, comprising: receiving a rule index in an enterprise system, wherein the rule index provides rule patterns for associating links with queries; receiving a search request from a user comprising a query string that includes a set of query tokens, wherein the user has been authorized to search by a first authentication performed by the enterprise system; in response to the search request: generating and displaying search results; and generating and displaying one or more suggested links to documents, where the suggested links are to documents which have not been crawled by the enterprise system; wherein generating the suggested links comprises: generating, using the processor, variations of the set of query tokens; and applying, using the processor, the rule index to variations of the set of query tokens; wherein applying the rule index further comprises matching a variation of the set of query tokens to one or more rule index entries to identify at least one related link, wherein the at least one related link is not included in the search results; submitting information about the user to a provider of the one or more suggested links, wherein the provider performs a second authentication of the user; selecting one or more related links to display as suggested links when the second authentication is successful; and providing the user with a message other than the suggested content when the second authentication fails.