I've noticed if you enable SSL management, and navigate directly using https://<nss ip> the following error is displayed:
Secure Connection Failed
An error occurred during a connection to ........
SSL received a record that exceeded the maximum permissible length.
(Error code: ssl_error_rx_record_too_long)
however if you navigate via http://<ip> then it is redirected to https.
done using firefox 3.6.6.