Sometimes applications might refer external websites which are not relevant for overall security check, however, there are certain situations where external websites are part of the inspected application and thus must be assessed.

Under "Scanner Events" tree and "Rejected Hosts" option, you will be able to see a list of web sites that were rejected by N-Stalker's spider engine because of restricted configuration.

If you need to explicitly authorize a host from the list, right-click over it and click on "Enable Host".