Simple NAT and Firewall Configuration (SNFC) Protocol Version 1.0

Document Type Expired Internet-Draft (individual)
Authors Martin Stiemerling  , Juergen Quittek 
Last updated 2001-11-05
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This memo specifies a protocol for configuring Network Address Translators (NATs) and firewalls dynamically to create address bindings and open pinholes. NATs and firewalls are a problem for applications using voice and video streaming, such as IP telephony, because they need to establish voice or video channels dynamically. The Simple NAT and Firewall Control (SNFC) protocol allows clients to send requests for this purpose to serving NATs and/or firewalls. The protocol is designed to provide a very simple and basic solution that can easily be implemented and used.


Martin Stiemerling (
Juergen Quittek (

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