On 10/26/14, 1:26 PM, Paul Hoffman wrote:

4.2:
    o  In many application protocols, clients can be configured to use
       TLS even if the server has not advertised that TLS is mandatory or
       even supported (e.g., this is often the case in messaging
       protocols such as IMAP and XMPP).
What is "advertised" supposed to mean here? The above is certainly not true for 
STARTTLS-style protocols. If this is meant to cover protocols that use URI schemes that might or 
might not end is "s", those are not server advertisements. I'm not sure how to reword 
this because it is too unclear.

I propose:

   o  In many application protocols, clients can be configured to use
      TLS no matter whether the server offers TLS during a protocol
      exchange or advertises support for TLS (e.g., through a flag
      indicating that TLS is required).  Application clients SHOULD use
      TLS by default, and disable this default only through explicit
      configuration by the user.

Peter


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