Using jigdo

["Oscar Corte" <oscarlx@puebla.megared.net.mx>]

Hi all
 
I'm trying to use jigdo to download Debian ISO images. 

However. Afeter tyng several RUL's. I always receive the same message
from jigdo-lite script as sown next. 
 ----------------------------------------------------------------
Downloading .jigdo file
--17:18:07--  http://ftp.debian.org/debian/
           => `index.html'
Resolving ftp.debian.org... 128.101.80.133
Connecting to ftp.debian.org|128.101.80.133|:80... connected.
HTTP request sent, awaiting response... 403 Forbidden ( The ISA Server
denied the specified Uniform Resource Locator (URL).  )
17:18:08 ERROR 403: Forbidden ( The ISA Server denied the specified
Uniform Resource Locator (URL).  ).
------------------------------------------------------------------

Could somebody give me a hint about what am I doing wrong?

Thanks a lot in advance

Regards

Oscar Corte