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Key Distribution Center (KDC) Server Address Sub-option for the Dynamic Host Configuration Protocol (DHCP) CableLabs Client Configuration (CCC) Option (RFC3634)

IP.com Disclosure Number: IPCOM000021121D
Original Publication Date: 2003-Dec-01
Included in the Prior Art Database: 2003-Dec-24
Document File: 8 page(s) / 13K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

K. Luehrs: AUTHOR [+4]

Abstract

This document defines a new sub-option for the CableLabs Client Configuration (CCC) Dynamic Host Configuration Protocol (DHCP) option code for conveying the network addresses of Key Distribution Center (KDC) servers.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 27% of the total text.

Network Working Group K. Luehrs

Request for Comments: 3634 CableLabs

Category: Standards Track R. Woundy

Comcast Cable

J. Bevilacqua

N. Davoust

YAS Corporation

December 2003

Key Distribution Center (KDC) Server Address Sub-option for

the Dynamic Host Configuration Protocol (DHCP)

CableLabs Client Configuration (CCC) Option

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 document defines a new sub-option for the CableLabs Client

Configuration (CCC) Dynamic Host Configuration Protocol (DHCP) option

code for conveying the network addresses of Key Distribution Center

(KDC) servers.

1. Introduction

A CableLabs Client Configuration (CCC) Dynamic Host Configuration

Protocol (DHCP) Option code providing the Key Distribution Center

(KDC) server address will be needed for CableHome-compliant

residential gateways configured to use Kerberos for authentication as

the first step in establishing a secure SNMPv3 link between the

Portal Service (PS) logical element [2,3] in residential gateways,

and the SNMP entity in the cable operator's data network.

The CCC DHCP option code will be used to address specific needs of

CableLabs client devices during their configuration processes. This

document proposes a sub-option for the CCC DHCP option.

Luehrs, et al. Standards Track [Page 1]

RFC 3634 KDC Server Address Sub-option December 2003

Configuration of a class of CableLabs client devices described in [2]

and [3] will require a DHCP sub-option to provide the client with the

network address of a KDC server in the cable operator's data network.

The class of devices assumed in [2] and [3] is unlike the class of

devices considered in [1], which perform a DNS lookup of the Kerberos

Realm name to find the KDC server network address.

This document proposes a sub-option of the CCC DHCP option code for

use with CableLabs client devices. The proposed sub-option encodes

an identifier for the network address of each of one or more Key

Distribution Center servers with which the CableLabs client device

exchanges security information.

The key words "MUST", "MUST NOT", "SHOULD", "SHOULD NOT" and "MAY" in

this document are to be interpreted as described in BCP 14, RFC 2119

[4].

2. Key Distribution Center IP Address Sub-option

CableHome specifications will specify the Key Distribution Center

network address encoding as a sub-option of the CCC DHCP Option code.

This field will be used to inform the client device of the network

address of one or more Key Distribution Center servers.

The encoding of the KDC Server Address sub-option will adhere to the

format of an IPv4 address. The minimum...