Internet Engineering Task Force S. Hollenbeck
Internet-Draft VeriSign, Inc.
March 27, 2001 Expires: September 27, 2001
Generic Registry-Registrar Protocol Requirements
<draft-ietf-provreg-grrp-reqs-01.txt>
Status of this Memo
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provisions of Section 10 of RFC2026.
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Abstract
This document describes high-level functional and interface
requirements for a client-server protocol for the registration and
management of Internet domain names in shared registries. Specific
technical requirements detailed for protocol design are not presented
here. Instead, this document focuses on the basic functions and
interfaces required of a protocol to support multiple registry and
registrar operational models.
Conventions Used In This Document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
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Table of Contents
1. Introduction ................................................. 3
1.1 Definitions, Acronyms, and Abbreviations .................... 3
2. General Description .......................................... 5
2.1 System Perspective .......................................... 5
2.2 System Functions ............................................ 5
2.3 User Characteristics ........................................ 5
2.4 Assumptions ................................................. 5
3. Functional Requirements ...................................... 7
3.1 Session Management .......................................... 7
3.2 Identification and Authentication ........................... 7
3.3 Transaction Identification .................................. 7
3.4 Object Management ........................................... 8
3.5 Domain Status Indicators .................................... 13
3.6 Transaction Completion Status ............................... 14
4. External Interface Requirements .............................. 15
4.1 User Interfaces ............................................. 15
4.2 Hardware Interfaces ......................................... 15
4.3 Software Interfaces ......................................... 15
4.4 Communications Interfaces ................................... 15
5. Performance Requirements ..................................... 16
6. Design Constraints ........................................... 16
6.1 Standards Compliance ........................................ 16
6.2 Hardware Limitations ........................................ 16
7. Service Attributes ........................................... 17
7.1 Reliability ................................................. 17
7.2 Availability ................................................ 17
7.3 Scalability ................................................. 17
7.4 Maintainability ............................................. 17
7.5 Extensibility ............................................... 18
7.6 Security .................................................... 18
8. Other Requirements ........................................... 19
8.1 Database Requirements ....................................... 19
8.2 Operational Requirements .................................... 19
8.3 Site Adaptation Requirements ................................ 19
8.4 Data Collection Requirements ................................ 19
9. Internationalization Requirements ............................ 20
10. IANA Considerations ......................................... 21
11. Security Considerations ..................................... 22
12. References .................................................. 23
13. Editor's Address ............................................ 23
A. Revision History ............................................. 24
B. Full Copyright Statement ..................................... 25
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1. Introduction
The advent of shared domain name registration systems illustrates the
utility of a common, generic protocol for registry-registrar
interaction. A standard generic protocol will allow registrars to
communicate with multiple registries through a common interface,
reducing operational complexity. This document describes high level
functional and interface requirements for a generic provisioning
protocol suitable for registry-registrar operations. Detailed
technical requirements are not addressed in this document.
This document is being discussed on the "ietf-provreg" mailing list.
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1.1 Definitions, Acronyms, and Abbreviations
ccTLD: Country Code Top Level Domain. ".us" is an example of a ccTLD.
CORE: Council of Registrars
DNS: Domain Name System
gTLD: Generic Top Level Domain. ".com" is an example of a gTLD.
IANA: Internet Assigned Numbers Authority
IETF: Internet Engineering Task Force
IP Address: Either or both IPv4 or IPv6 address.
IPv4: Internet Protocol version 4
IPv6: Internet Protocol version 6
NSI: Network Solutions, Inc.
RRP: Registry-Registrar Protocol
TLD: Top Level Domain. A generic term used to describe both gTLDs and
ccTLDs that exist under the top-level root of the domain name
hierarchy.
Exclusive Registration System: A domain name registration system in
which registry services are limited to a single registrar. Exclusive
Registration Systems may be either loosely coupled (in which case the
separation between registry and registrar systems is readily evident),
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or tightly coupled (in which case the separation between registry and
registrar systems is obscure).
Object: A generic term used to describe entities that are created,
updated, deleted, and otherwise managed by a generic registry-
registrar protocol.
Registrant: An entity that registers domain names in a registry
through the services provided by a registrar. Registrants include
individuals, organizations, and corporations.
Registrar: An entity that provides front-end domain name registration
services to registrants, providing a public interface to registry
services.
Registry: An entity that provides back-end domain name registration
services to registrars, managing a central repository of information
for a given TLD. A registry is typically responsible for publication
and distribution of TLD zone files used by the Domain Name System.
Shared Registration System: A domain name registration system in which
registry services are shared among multiple independent registrars.
Shared Registration Systems require a loose coupling between
registrars and a registry.
Thick Registry: A registry in which all of the information associated
with registered entities, including both technical information
(information needed to produce zone files) and social information
(information needed to implement operational, business, or legal
practices), is stored within the registry repository.
Thin Registry: A registry in which some element of the social
information associated with registered entities is distributed between
a shared registry and the registrars served by the registry.
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2. General Description
A basic understanding of domain name registration systems provides
focus for the enumeration of functional and interface requirements of
a protocol to serve those systems. This section provides a high-level
description of domain name registration systems to provide context for
the requirements identified later in this document.
2.1 System Perspective
A domain name registration system consists of a protocol and
associated software and hardware that permits registrars to provide
Internet domain name registration services within the TLDs
administered by a registry. A registration system may be shared among
multiple competing registrars, or it may be served by a single
registrar that is either tightly or loosely coupled with back-end
registry services. The system providing registration services for the
.com, .net, and .org gTLDs is an example of a shared registration
system serving multiple competing registrars. The systems providing
registration services for some ccTLDs and the .gov and .mil gTLDs are
examples of TLDs served by a single registrar.
2.2 System Functions
Registrars access a registry through a protocol to register objects
and perform object management functions. Required functions include
session management; object creation, update, renewal, and deletion;
object query; and object transfer.
The registry generates DNS zone files for the TLDs it serves. These
zone files are created and distributed to a series of name servers
that provide the foundation for the domain name system.
2.3 User Characteristics
Protocol users fall into two broad categories: entities that use
protocol client implementations and entities that use protocol server
implementations, though an entity may provide both client and server
services if it provides intermediate services. A protocol provides a
loose coupling between these communicating entities.
2.4 Assumptions
There is one and only one registry that is authoritative for a given
TLD.
A registry can be authoritative for more than one TLD.
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Some registry operations may be billable. The impact of a billable
operation should be mitigated through the specification of non-
billable operations that allow a registrar to make informed decisions
before executing billable operations.
A registry may choose to implement a subset of the features provided
by a generic registry-registrar protocol. A thin registry, for
example, may not provide services to register social information.
Specification of minimal implementation compliance requirements is
thus an exercise left for a formal protocol definition document that
addresses the functional requirements specified here.
A protocol that meets the requirements described here may be called
something other than "Generic Registry Registrar Protocol".
The requirements described in this document are not intended to limit
the set of objects that may be managed by a generic registry-registrar
protocol.
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3. Functional Requirements
This section describes functional requirements for a registry-
registrar protocol. Technical requirements that describe how these
requirements must be met are out of scope for this document.
3.1 Session Management
[1] The protocol MUST provide services to explicitly establish a
client session with a registry server.
[2] In a connection-oriented environment, a server MUST respond to
connection attempts with information that identifies the server and
the default server protocol version.
[3] The protocol MUST provide services that allow a client to request
use of a specific protocol version as part of negotiating a session.
[4] The protocol MUST provide services that allow a server to decline
use of a specific protocol version as part of negotiating a session.
[5] A session MUST NOT be established if the client and server are
unable to reach agreement on the protocol version to be used for the
requested session.
[6] The protocol MUST provide services to explicitly end an
established session.
[7] The protocol MUST provide services that ensure transactional
integrity if a session is aborted prematurely.
3.2 Identification and Authentication
[1] The protocol or another layered protocol MUST provide services to
identify registrar clients and registry servers before granting access
to other protocol services.
[2] The protocol or another layered protocol MUST provide services to
authenticate registrar clients and registry servers before granting
access to other protocol services.
[3] The protocol or another layered protocol MUST provide services to
negotiate an authentication mechanism acceptable to both client and
server.
3.3 Transaction Identification
[1] Registry operations that create, modify, or delete objects MUST be
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associated with a registry-unique identifier. The protocol MUST allow
each transaction to be identified in a permanent and globally unique
manner to facilitate temporal ordering and state management services.
3.4 Object Management
This sections describes requirements for object management, including
identification, registration, association, update, transfer, renewal,
deletion, and query.
3.4.1 Object Identification
Some objects, such as name servers and contacts, MAY have utility in
multiple registries. However, maintaining disjoint copies of object
information in multiple registries can lead to inconsistencies that
have adverse consequences for the Internet. For example, changing a
name server name in one registry, but not in a second registry that
refers to the server for domain name delegation, can produce
unexpected DNS query results.
[1] Every object MUST have an associated object identifier.
[2] Object identifiers MUST be globally unique.
[3] An object's identifier MUST NOT change during the lifetime of the
object in a particular repository, even if administrative control of
the object changes over time.
[4] An object identifier MUST contain information that unambiguously
identifies the object.
[5] Object identifier format SHOULD be easily parsed and understood by
humans.
[6] An object's identifier MUST be generated and returned as part of
the protocol response when an object is created.
3.4.2 Object Registration
[1] The protocol MUST provide services to register Internet domain
names.
[2] The protocol MUST permit a starting and ending time for a domain
name registration to be negotiated, thereby allowing a registry to
implement policies allowing a range of registration validity periods,
and enabling registrars to select a period for each registration they
submit from within the valid range based on out-of-band negotiation
between the registrar and the registrant. Registries SHOULD be allowed
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to accept indefinitely valid registrations if the policy that they are
implementing permits, and to specify a default validity period if one
is not selected by a registrar. Registries MUST be allowed to specify
minimal validity periods consistent with prevailing or preferred
practices for fee-for-service recovery. The protocol MUST provide
features to ensure that both registry and registrar have a mutual
understanding of the validity period at the conclusion of a successful
registration event.
[3] The protocol MUST provide services to register name servers. Name
server registration MUST NOT be limited to a specific period of time.
Name servers registered within the registry's authoritative TLDs MUST
be registered with a valid IPv4 or IPv6 address. A name server MAY be
registered with multiple IP addresses. An IP address MAY be shared
among multiple name servers using distinct server names. Name servers
that exist in TLDs other than those for which the registry is
authoritative MUST be registered without an IP address providing that
the server's TLD is itself a valid TLD.
[4] The protocol MUST provide services to manage name servers that MAY
be associated with multiple domains.
[5] Name servers associated with a domain MAY registered in a
different domain or even in a TLD for which the registry is not
authoritative. This means that IP addresses for name servers whose
domain name exists in another TLD MUST be registered only in the
registry that is authoritative for the TLD of the name server. Glue
records (DNS "A" records) MUST only be created for DNS "NS" records
for which the registry is authoritative.
[6] The protocol MUST provide services to register social information
describing human and organizational entities. Registration of social
information MUST NOT be limited to a specific period of time. Social
information MAY include a name (individual name, organization name, or
both), address (including street address, city, state or province (if
applicable), postal code, and country), voice telephone number, e-mail
address, and facsimile telephone number.
[7] Protocol services to register an object MUST be available to all
authorized registrars.
3.4.3 Object Association
[1] The protocol MUST provide services to associate name servers with
domain names. A domain name MAY have multiple authoritative name
servers. Name servers MAY be authoritative for multiple domain names.
[2] The protocol MUST provide services to associate IP addresses with
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name servers. Name servers MAY have multiple IP addresses. An IP
address MAY be associated with multiple name servers.
[3] The protocol MUST provide services to associate social information
with other objects. Social information associations MUST be identified
by type. "Registrant" is an example social information type that MAY
be associated with an object such as a domain name.
[4] Some managed objects represent shared resources that MAY be
referenced by multiple registrars. Requests to associate a known
shared resource object with another registered object MUST NOT be
limited to the registrar that sponsors the registered objects. For
example, server ns1.example.com (managed by registrar X) MAY be
associated with both domain example.com (managed by registrar X) and
domain test.com (managed by registrar Y). Registrar X maintains
administrative control over domain example.com and server
ns1.example.com, and registrar Y maintains administrative control over
domain test.com. Registrar Y does not have administrative control
over server ns1.example.com.
3.4.4 Object Update
[1] The protocol MUST provide services to update information
associated with registered Internet domain names.
[2] The protocol MUST provide services to update information
associated with registered name servers.
[3] The protocol MUST provide services to update social information
associated with registered human and organizational entities.
[4] The protocol MUST provide services to confirm registrar
authorization to update an object.
[5] Requests to update a registered object MUST be limited to the
registrar that currently sponsors the registered object. Unauthorized
attempts to update a registered object MUST be explicitly rejected.
3.4.5 Object Transfer
[1] The protocol MUST provide services to transfer domain names among
authorized registrars. Name servers registered in a domain being
transferred MUST be transferred along with the domain itself. For
example, name servers "ns1.example.com" and "ns2.example.com" MUST be
implicitly transferred when domain "example.com" is transferred.
[2] The protocol MUST provide services to transfer social information
objects among authorized registrars.
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[3] Transfer requests MUST be initiated by the registrar who wishes to
become the new administrator of an object.
[4] The protocol MUST provide services to confirm registrar
authorization to transfer an object.
[5] The protocol MUST provide services that allow the requesting
registrar to cancel a requested object transfer before the request has
been approved or rejected by the original sponsoring registrar.
Requests to cancel the transfer of registered objects MUST be limited
to the registrar that requested transfer of the registered object.
Unauthorized attempts to cancel the transfer of a registered object
MUST be explicitly rejected.
[6] The protocol MUST provide services that allow the original
sponsoring registrar to approve or reject a requested object transfer.
Requests to approve or reject the transfer of registered objects MUST
be limited to the registrar that currently sponsors the registered
object. Unauthorized attempts to approve or reject the transfer of a
registered object MUST be explicitly rejected.
[7] The protocol MUST provide services that allow both the original
sponsoring registrar and the potential new registrar to monitor the
status of both pending and completed transfer requests.
[8] Transfer of an object MAY extend the object's registration period.
If an object's registration period will be extended as the result of a
transfer, the new expiration date and time MUST be returned after
successful completion of a transfer request.
[9] Requests to initiate the transfer of a registered object MUST be
available to all authorized registrars.
3.4.6 Object Renewal/Extension
[1] The protocol MUST provide services to renew or extend the validity
period of registered domain names. If applicable, the new expiration
date and time MUST be returned after successful completion of a
request to renew or extend the validity period.
[2] Requests to renew or extend the validity period of a registered
object MUST be limited to the registrar that currently sponsors the
registered object. Unauthorized attempts to renew or extend the
validity period of a registered object MUST be explicitly rejected.
[3] The protocol MUST provide services to confirm registrar
authorization to renew or extend the validity period of an object.
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3.4.7 Object Deletion
[1] The protocol MUST provide services to remove a domain name from
the registry.
[2] The protocol MUST provide services to remove a name server from
the registry.
[3] The protocol MUST provide services to remove a social information
object from the registry.
[4] The protocol MUST provide services to confirm registrar
authorization to remove an object.
[5] Requests to remove a registered object MUST be limited to the
registrar that currently sponsors the registered object. Unauthorized
attempts to remove a registered object MUST be explicitly rejected.
3.4.8 Object Existence Query
This section describes requirements for a light weight query mechanism
whose sole purpose is to determine if an object exists in a registry.
[1] The protocol MUST provide services to determine if a domain name
exists in the registry. Domain names MUST be searchable by fully
qualified name.
[2] The protocol MUST provide services to determine if a name server
exists in the registry. Name servers MUST be searchable by fully
qualified name.
[3] The protocol MUST provide services to determine if a social
information object exists in the registry. Social information MUST be
searchable by a registry-unique identifier.
[4] A query to determine if an object exists in the registry MUST
return only a positive or negative response so that server software
that responds to this query can be optimized for speed.
[5] Requests to determine the existence of a registered object MUST be
available to all authorized registrars.
3.4.9 Object Information Query
This section describes requirements for a query mechanism whose
purpose is to provide detailed information describing objects that
exist in a registry.
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[1] The protocol MUST provide services to retrieve information
describing a domain name from the registry. Returned information MUST
include the identifier of the current sponsoring registrar, the
identifier of the registrar that originally registered the domain, the
creation date and time, the expiration date and time (if any), the
date and time of the last successful update (if any), the identifier
of the registrar that performed the last update, the date and time of
last successful transfer request or completed transfer (if any), the
current status of the domain, the most recent authorization
information, identifiers describing social information associated with
the domain, and the child name servers registered in the domain. The
most recent authorization information MUST be returned only to the
current sponsoring registrar.
[2] The protocol MUST provide services to retrieve information
describing a name server from the registry. Returned information MUST
include the identifier of the current sponsoring registrar, the
identifier of the registrar that originally registered the name
server, the creation date and time, the date and time of the last
successful update (if any), the identifier of the registrar that
performed the last update, the date and time of last successful
transfer request or completed transfer (if any), the IP addresses
currently associated with the name server, and the most recent
authorization information. The most recent authorization information
MUST be returned only to the current sponsoring registrar.
[3] The protocol MUST provide services to retrieve social information
from the registry. Returned information MUST include identification
attributes (which MAY include name, address, telephone numbers, and
e-mail address), the identifier of the registrar that originally
registered the information, the creation date and time, the date and
time of the last successful update (if any), the identifier of the
registrar that performed the last update, the date and time of last
successful transfer request or completed transfer (if any), and the
most recent authorization information. The most recent authorization
information MUST be returned only to the current sponsoring registrar.
[4] Requests to retrieve information describing a registered object
MAY be granted by the registrar that currently sponsors the registered
object. Unauthorized attempts to retrieve information describing a
registered object MUST be explicitly rejected.
3.5 Domain Status Indicators
[1] The protocol MUST provide status indicators that identify the
operational state of a domain name. Indicators MAY be provided to
identify a newly created state (the domain has been registered but has
not yet appeared in a zone), a nominal active state (the domain can be
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modified and is published in a zone), an inactive state (the domain
can be modified but is not published in a zone because it has no
authoritative name servers), a hold state (the domain may not be
modified and is not published in a zone), a lock state (the domain may
not be modified and is published in a zone), a pending transfer state,
and a pending removal state.
[2] If provided, indicators for hold and lock status MUST allow
independent setting by both registry and registrar.
[3] A domain MAY have multiple statuses at any given time. Some
statuses MAY be mutually exclusive.
3.6 Transaction Completion Status
[1] The protocol MUST provide services that unambiguously note the
success or failure of every transaction. Individual success and error
conditions MUST be noted distinctly.
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4. External Interface Requirements
External interfaces define the interaction points between a system and
entities that communicate with the system. Specific areas of interest
include user interfaces, hardware interfaces, software interfaces, and
communications interfaces.
4.1 User Interfaces
[1] A generic registry-registrar protocol MUST NOT define any features
that introduce user interface limitations.
4.2 Hardware Interfaces
[1] A generic registry-registrar protocol MUST NOT define any features
that introduce hardware interface limitations.
4.3 Software Interfaces
[1] A generic registry-registrar protocol MUST NOT define any features
that introduce software interface limitations.
4.4 Communications Interfaces
[1] Registries, registrars, and registrants interact using a wide
spectrum of communications interfaces built upon multiple protocols,
including transport layer protocols such as TCP and application layer
protocols such as SMTP. A generic registry-registrar protocol SHOULD
be serviceable over multiple standard communications protocols.
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5. Performance Requirements
[1] Run-time performance is an absolutely critical aspect of protocol
usability. While performance is very heavily dependent on the hardware
and software architecture that implements a protocol, protocol
features can have a direct impact on the ability of the underlying
architecture to provide optimal performance. A generic registry-
registrar protocol MUST be usable in both high volume and low volume
operating environments.
6. Design Constraints
Protocol designers need to be aware of issues beyond functional and
interface requirements when balancing protocol design decisions. This
section describes additional factors that may have an impact on
protocol design, including standards compliance and hardware
limitations.
6.1 Standards Compliance
[1] A generic registry-registrar protocol MUST conform to current IETF
standards. Standards for domain and host name syntax, IP address
syntax, security, and transport are particularly relevant. Emerging
standards for the Domain Name System MUST be considered as they
approach maturity.
6.2 Hardware Limitations
[1] A generic registry-registrar protocol MUST NOT define any features
that preclude hardware independence.
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7. Service Attributes
Elements of service beyond functional and interface requirements are
essential factors to consider as part of a protocol design effort.
This section describes several important service elements that MUST be
addressed by protocol designers, including reliability, availability,
scalability, maintainability, extensibility, and security.
7.1 Reliability
[1] Reliability is a measure of the extent to which a protocol
provides a consistent, dependable level of service. Reliability is an
important attribute for a domain name management protocol. An
unreliable protocol increases the risk of data exchange errors, which
at one extreme may have a direct impact on protocol usability and at
the other extreme may introduce discontinuity between registry and
registrar data stores. A generic registry-registrar protocol MUST
include features that maximize reliability at the application protocol
layer. Services provided by underlying transport, session, and
presentation protocols SHOULD also be considered when addressing
application protocol reliability.
[2] Default protocol actions for when a request or event times out
MUST be well defined.
7.2 Availability
[1] Availability is a measure of the extent to which the services
provided by a protocol are accessible for an intended use.
Availability of an application layer protocol is primarily dependent
on the software and hardware systems that implement the protocol.
That is, the systems that implement the protocol MUST themselves be
inherently available. As such, a generic registry-registrar protocol
MUST NOT include any features that impinge on the underlying
reliability of the software and hardware systems needed to implement
the protocol.
7.3 Scalability
[1] Scalability is a measure of the extent to which a protocol can
accommodate use growth while preserving acceptable operational
characteristics. A generic registry-registrar protocol MUST be
capable of operating at an acceptable level as the load on registry
and registrar systems increases.
7.4 Maintainability
[1] Maintainability is a measure of the extent to which a protocol can
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be adapted or modified to address unforeseen operational needs or
defects. A generic registry-registrar protocol SHOULD be developed
under the nominal working group processes of the IETF to provide a
well-known mechanism for ongoing maintenance.
7.5 Extensibility
[1] Extensibility is a measure of the extent to which a protocol can
be adapted for future uses that were not readily evident when the
protocol was originally designed. A generic registry-registrar
protocol SHOULD provide features that at a minimum allow for the
management of new object types without requiring revisions to the
protocol itself.
[2] The requirements described in this document are not intended to
limit the set of objects that may be managed by a generic registry-
registrar protocol. A generic protocol MUST include features that
allow extension to object types that are not described in this
document.
[3] The protocol MUST provide an optional field within all commands
whose format and use will be controlled by individual registry policy.
7.6 Security
[1] Transactional privacy and integrity services MUST be available at
some protocol layer.
[2] This document describes requirements for basic user identification
and authentication services. A generic protocol MAY include
additional security services to protect against the attacks described
here, or a generic protocol MUST depend on other-layered protocols to
provide additional security services.
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8. Other Requirements
Certain aspects of anticipated operational environments SHOULD be
considered when designing a generic registry-registrar protocol.
Areas of concern include database operations, operations, site
adaptation, and data collection.
8.1 Database Requirements
[1] A generic registry-registrar protocol MUST NOT have any database
dependencies. However, efficient use of database operations and
resources MUST be considered as part of the protocol design effort.
The protocol SHOULD provide atomic features that can be efficiently
implemented to minimize database load.
8.2 Operational Requirements
[1] Registry-registrar interactions at the protocol level SHOULD
operate without human intervention. However, intermediate services
that preserve the integrity of the protocol MAY be provided. For
example, an intermediate service that determines if a registrant is
authorized to register a name in a TLD MAY be provided.
[2] Protocol clients and servers MUST maintain a consistent
understanding of the current date and time to effectively manage
objects with temporal properties.
8.3 Site Adaptation Requirements
[1] Registries and registrars have varying business and operational
requirements. Several factors, including governance standards, local
laws, customs, and business practices all play roles in determining
how registries and registrars are operated. A generic registry-
registrar protocol MUST be flexible enough to operate in diverse
registry-registrar environments.
8.4 Data Collection Requirements
[1] Some of the data exchanged between a registrar and registry MAY be
considered personal, private, or otherwise sensitive. Disclosure of
such information MAY be restricted by laws and/or business practices.
A generic protocol MUST provide services to identify information whose
disclosure is not strictly required for technical reasons.
[2] Some of the social information exchanged between a registrar and
registry MAY be REQUIRED to create, manage, or operate Internet or DNS
infrastructure facilities, such as zone files. Such information is
subject to public disclosure per relevant IETF standards.
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9. Internationalization Requirements
[1] [RFC1035] restricts the encoding of Internet host and domain names
in the DNS to a subset of the 7-bit US-ASCII character set. More
recent standards, such as [RFC2130] and [RFC2277], describe the need
to develop protocols for an international Internet. These and other
standards MUST be considered during the protocol design process to
ensure world-wide usability of a generic registry registrar protocol.
[2] The protocol MUST allow exchange of data in formats consistent
with current international agreements for the representation of such
objects. In particular, this means that addresses MUST include
country, that telephone numbers MUST start with the international
prefix "+", and that appropriate thought be given to the usability of
information in both local and international contexts. This MAY mean
that some elements (like names and addresses) need to be represented
multiple times, or formatted for different contexts (for instance
English/French in Canada, or Latin/ideographic in Japan).
[3] All date and time values specified in a generic registry-registrar
protocol MUST be expressed in Universal Coordinated Time. Dates and
times MUST include information to represent a four-digit calendar
year, a calendar month, a calendar day, hours, minutes, seconds,
fractional seconds, and the time zone for Universal Coordinated Time.
Calendars apart from the Gregorian calendar MUST NOT be used
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10. IANA Considerations
IANA has assigned several TCP and UDP ports for use within shared
registration systems. The assignments can be identified in two broad
categories: those assigned for use with the CORE Shared Registry
System Protocol (SRSP) and those assigned for use with the NSI
Registry Registrar Protocol (RRP).
The CORE SRSP assignments are as follows:
srssend 362/tcp SRS Send
srssend 362/udp SRS Send
srsp 2682/tcp SRSP
srsp 2682/udp SRSP
The NSI RRP assignments are as follows:
rrp 648/tcp Registry Registrar Protocol (RRP)
rrp 648/udp Registry Registrar Protocol (RRP)
These assignments should be preserved as long as the corresponding
systems are operational. Additional IANA services may be required to
support testing and deployment of protocol implementations.
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11. Security Considerations
Several security services, including confidentiality, authentication,
access control, integrity, and non-repudiation SHOULD be applied to
protect interactions between registries and registrars.
Confidentiality services protect sensitive exchanged information from
inadvertent disclosure. Authentication services confirm the claimed
identity of registries and registrars before engaging in online
transactions. Access control services control access to data and
services based on identity. Integrity services guarantee that
exchanged data has not been altered between the registry and the
registrar. Non-repudiation services provide assurance that the sender
of a transaction can not deny being the source of the transaction, and
that the recipient cannot deny being the receiver of the transaction.
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12. References
[RFC1035] P. Mockapetris: "DOMAIN NAMES - IMPLEMENTATION AND
SPECIFICATION", RFC 1035, November 1987.
[RFC2119] S. Bradner: "Key Words for Use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2130] C. Weider et al.: "The Report of the IAB Character Set
Workshop", RFC 2130, April 1997.
[RFC2277] H. Alvestrand: "IETF Policy on Character Sets and
Languages", BCP 18, RFC 2277, January 1998.
13. Editor's Address
Scott Hollenbeck
VeriSign Global Registry Services
21345 Ridgetop Circle
Dulles, VA 20166-6503
USA
shollenbeck@verisign.com
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A. Revision History
-00: First working group version produced from an earlier individual
submission draft, draft-hollenbeck-grrp-reqs-06.txt.
-01: Removed 3.4.1-[7], replacing it with a new section 3.4.1 focused
on object identification. Renumbered remaining subsections in 3.4.
Added needed definitions removed when going from individual submission
-06 to WG -00 back to the draft. Added section 7.6 to separate
security requirements from security considerations. Renamed section 9
from "Internationalization Considerations" to "Internationalization
Requirements".
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B. Full Copyright Statement
Copyright (C) The Internet Society 2001. All Rights Reserved.
This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published and
distributed, in whole or in part, without restriction of any kind,
provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of developing
Internet standards in which case the procedures for copyrights defined
in the Internet Standards process must be followed, or as required to
translate it into languages other than English.
The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.
This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN
WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Acknowledgement
Funding for the RFC Editor function is currently provided by the
Internet Society.
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