Long: proxy-negotiate Help: Use HTTP Negotiate (SPNEGO) authentication on the proxy Added: 7.17.1 See-also: proxy-anyauth proxy-basic Category: proxy auth Example: --proxy-negotiate --proxy-user user:passwd -x proxy $URL --- Tells curl to use HTTP Negotiate (SPNEGO) authentication when communicating with the given proxy. Use --negotiate for enabling HTTP Negotiate (SPNEGO) with a remote host.