> => How can yahoo.com reliably know any possible client? if yahoo.com thinks there's any value at all in the client's IP address, they're deluded.
the only way to reliably know a client is if the client presents you with cryptographic proof that they sent that message, and you trust the keying material on which that proof is based. -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
