A Middle Box Architectural Framework

Document Type Expired Internet-Draft (individual)
Author Eliot Lear 
Last updated 2001-02-01 (latest revision 2001-01-04)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


It used to be reasonable to expect that any two points connected to the Internet to have the ability to hold any communication. Such an expectation has not be reasonable for quite some time, thanks to firewalls, NATs, and other intermediate devices. Today, we acknowledge a new architecture and we name the functional blocks of that architecture as well as several ways to get ends to communicate, and how two devices could expect to communicate with each other. This document does not define the protocols involved.


Eliot Lear (lear@cisco.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)