Authenticated Middlebox Traversal with the Pickle Packet

Document Type Expired Internet-Draft (individual)
Authors Pete McCann  , Steve Gilbert 
Last updated 2010-12-07
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes the Pickle Packet, a message that can be used to coordinate the opening of a transport connection with various middleboxes that may lie on the path. It contains the DNS names of both the initiator and the responder of the connection and some authentication data. Because the authentication data uses public key cryptography, any middlebox can independently authenticate the initiator and make a policy decision whether to allow or deny the flow based on the DNS names. The Pickle Packet allows for middleboxes to establish state such as firewall pinholes or security associations that can be used to filter out unwanted traffic.


Pete McCann (
Steve Gilbert (

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