ssh encryption

Hi,
I was wondering if you offer a ssh product which does password 
encryption only? We do not desire to encrypt the data due to the 
overhead.
Karen
********************
NOTE: New NASA email
Karen.A.Michael@xxxxxxxx
********************
Karen Michael
External Interface Manager
ESDIS Project Code 423
NASA GSFC
Building 32, Room N220B
Ph: 301-614-5286
Fax: 301-614-5270
********************
http://jupiter02.gsfc.nasa.gov/auratesting/