RADIUS Extensions for IP Port Configuration and Reporting (RFC8045)
Original Publication Date: 2017-Jan-01
Included in the Prior Art Database: 2017-Jan-26
Internet Society Requests For Comment (RFCs)
D. Cheng: AUTHOR [+4]
In a broadband network, customer information is usually stored on a RADIUS server [RFC2865]. At the time when a user initiates an IP connection request, if this request is authorized, the RADIUS server will populate the user's configuration information to the Network Access Server (NAS), which is often referred to as a Broadband Network Gateway (BNG) in broadband access networks. The Carrier- Grade NAT (CGN) function may also be implemented on the BNG. Within this document, the CGN may perform Network Address Translation from IPv4 Clients to IPv4 Servers (NAT44) [RFC3022], NAT from IPv6 Clients to IPv4 Servers (NAT64) [RFC6146], or Dual-Stack Lite Address Family Transition Router (AFTR) [RFC6333] function. In such case, the CGN IP transport port (e.g., TCP/UDP port) mapping behaviors can be part of the configuration information sent from the RADIUS server to the NAS/BNG. As part of the accounting information sent from the NAS/BNG to a RADIUS server, the NAS/BNG may also report the IP port mapping behavior applied by the CGN to a user session.
Internet Engineering Task Force (IETF) D. Cheng Request for Comments: 8045 Huawei Category: Standards Track J. Korhonen ISSN: 2070-1721 Broadcom Corporation M. Boucadair Orange S. Sivakumar Cisco Systems January 2017
RADIUS Extensions for IP Port Configuration and Reporting
This document defines three new RADIUS attributes. For devices that implement IP port ranges, these attributes are used to communicate with a RADIUS server in order to configure and report IP transport ports as well as mapping behavior for specific hosts. This mechanism can be used in various deployment scenarios such as Carrier-Grade NAT, IPv4/IPv6 translators, Provider WLAN gateway, etc. This document defines a mapping between some RADIUS attributes and IP Flow Information Export (IPFIX) Information Element identifiers.
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 7841.
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/rfc8045.
Cheng, et al. Standards Track [Page 1]
RFC 8045 RADIUS Extensions for IP Port January 2017
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