When I go to Configure Search and Indexing (ON SPPS 2003), I see
following information on the top of the page with the info icon :
/!\ For enchanced security, portal site Web Part Pages are currently
excluded from the index. To include this content in the index, click
Exclude and include portal site Web Part Pages in the Genral Content
Settings and Indexing Status section"

My question here is : What are these portal site Web Part Pages that are
excluded from the index.