SMT auth not encrypted?

["William F. Acker WB2FLW +1-303-777-8123" <wacker octothorp org>]

Hi all,

     Reading through Rodolfo's tutorial, I get the impression that the 
passwords would go across the net in the clear?  If so, what's the best 
way 
to have them encrypted?



          TIA.
          Bill in Denver