Dear all, I just uploaded to gridforge: http://forge.gridforum.org/sf/go/doc15549?nav=1 a very early draft for a proposal of a "PGI Transport Level Security profile", which uses X509 proxy certificates + a delegation port-type for authentication and credential delegation. At the moment the document just states what has already be said during the PGI teleconferences. I hope it will be useful for tomorrow discussion at OGF, and eventually evolve in the near future into a full specification (which at the moment is definitely not). Moreno. -- Moreno Marzolla INFN Sezione di Padova, via Marzolo 8, 35131 PADOVA, Italy EMail: moreno.marzolla@pd.infn.it Phone: +39 049 8277047 WWW : http://www.dsi.unive.it/~marzolla Fax : +39 049 8756233