Universal Plug and Play (UPnP) Internet Gateway Device - Port Control Protocol Interworking Function (IGD-PCP IWF)
RFC 6970
Internet Engineering Task Force (IETF) M. Boucadair
Request for Comments: 6970 France Telecom
Category: Standards Track R. Penno
ISSN: 2070-1721 D. Wing
Cisco
July 2013
Universal Plug and Play (UPnP)
Internet Gateway Device - Port Control Protocol Interworking Function
(IGD-PCP IWF)
Abstract
This document specifies the behavior of the Universal Plug and Play
(UPnP) Internet Gateway Device - Port Control Protocol Interworking
Function (IGD-PCP IWF). A UPnP IGD-PCP IWF is required to be
embedded in Customer Premises (CP) routers to allow for transparent
NAT control in environments where a UPnP IGD is used on the LAN side
and PCP is used on the external side of the CP router.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6970.
Boucadair, et al. Standards Track [Page 1]
RFC 6970 UPnP IGD-PCP IWF July 2013
Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
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described in the Simplified BSD License.
Table of Contents
1. Introduction ....................................................3
1.1. Requirements Language ......................................3
2. Acronyms ........................................................4
3. Architecture Model ..............................................4
4. UPnP IGD-PCP IWF: Overview ......................................6
4.1. UPnP IGD-PCP: State Variables ..............................6
4.2. IGD-PCP: Methods ...........................................7
4.3. UPnP IGD-PCP: Errors .......................................8
5. Specification of the IGD-PCP IWF ................................9
5.1. PCP Server Discovery .......................................9
5.2. Control of the Firewall ...................................10
5.3. Port Mapping Table ........................................10
5.4. Interworking Function without NAT in the IGD ..............10
5.5. NAT Embedded in the IGD ...................................11
5.6. Creating a Mapping ........................................12
5.6.1. AddAnyPortMapping() ................................12
5.6.2. AddPortMapping() ...................................13
5.7. Listing One or a Set of Mappings ..........................16
5.8. Delete One or a Set of Mappings: DeletePortMapping() or
DeletePortMappingRange() ..................................16
5.9. Renewing a Mapping ........................................19
5.10. Rapid Recovery ...........................................20
6. Security Considerations ........................................21
7. Acknowledgments ................................................21
8. References .....................................................22
8.1. Normative References ......................................22
8.2. Informative References ....................................22
Boucadair, et al. Standards Track [Page 2]
RFC 6970 UPnP IGD-PCP IWF July 2013
1. Introduction
The Port Control Protocol (PCP) specification [RFC6887] discusses the
implementation of NAT control features that rely upon Carrier Grade
NAT devices such as a Dual-Stack Lite (DS-Lite) Address Family
Transition Router (AFTR) [RFC6333] or NAT64 [RFC6146]. In
environments where a Universal Plug and Play Internet Gateway Device
(UPnP IGD) is used in the local network, an interworking function
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