Network Working Group D. New
Request for Comments: 3620 October 2003
Category: Standards Track
The TUNNEL Profile
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2003). All Rights Reserved.
Abstract
This memo describes a Blocks Extensible Exchange Protocol (BEEP)
profile that allows a BEEP peer to serve as an application-layer
proxy. It allows authorized users to access services through a
firewall.
Table of Contents
1. Rationale . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 One-Hop Example. . . . . . . . . . . . . . . . . . . . . . 3
2.2 Two-Hop Example. . . . . . . . . . . . . . . . . . . . . . 4
2.3 Failed Set-Up Example. . . . . . . . . . . . . . . . . . . 5
2.4 Non-BEEP Example . . . . . . . . . . . . . . . . . . . . . 5
2.5 Profile Example. . . . . . . . . . . . . . . . . . . . . . 6
2.6 Endpoint Example . . . . . . . . . . . . . . . . . . . . . 8
3. Message Syntax. . . . . . . . . . . . . . . . . . . . . . . . 9
4. Message Semantics . . . . . . . . . . . . . . . . . . . . . . 10
5. Provisioning . . . . . . . . . . . . . . . . . . . . . . . . . 12
6. Reply Codes. . . . . . . . . . . . . . . . . . . . . . . . . . 13
7. Security Considerations. . . . . . . . . . . . . . . . . . . . 14
8. Normative References . . . . . . . . . . . . . . . . . . . . . 15
A. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 16
A.1 Registration: BEEP Profile . . . . . . . . . . . . . . . . 16
A.2 Registration: A System (Well-Known) TCP
port number for TUNNEL . . . . . . . . . . . . . . . . . . 16
B. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 17
Author's Address . . . . . . . . . . . . . . . . . . . . . . . 17
Full Copyright Statement . . . . . . . . . . . . . . . . . . . 18
New Standards Track