| Internet-Draft | Groupings for HTTP Clients and Servers | April 2023 |
| Watsen | Expires 19 October 2023 | [Page] |
This document defines two YANG modules: the first defines a minimal grouping for configuring an HTTP client, and the second defines a minimal grouping for configuring an HTTP server. It is intended that these groupings will be used to help define the configuration for simple HTTP-based protocols (not for complete web servers or browsers).¶
This draft contains placeholder values that need to be replaced with finalized values at the time of publication. This note summarizes all of the substitutions that are needed. No other RFC Editor instructions are specified elsewhere in this document.¶
Artwork in this document contains shorthand references to drafts in progress. Please apply the following replacements (note: not all may be present):¶
AAAA --> the assigned RFC value for draft-ietf-netconf-crypto-types¶
DDDD --> the assigned RFC value for draft-ietf-netconf-tcp-client-server¶
FFFF --> the assigned RFC value for draft-ietf-netconf-tls-client-server¶
GGGG --> the assigned RFC value for this draft¶
Artwork in this document contains placeholder values for the date of publication of this draft. Please apply the following replacement:¶
2023-04-17 --> the publication date of this draft¶
The "Relation to other RFCs" section Section 1.1 contains the text "one or more YANG modules" and, later, "modules". This text is sourced from a file in a context where it is unknown how many modules a draft defines. The text is not wrong as is, but it may be improved by stating more directly how many modules are defined.¶
The "Relation to other RFCs" section Section 1.1 contains a self-reference to this draft, along with a corresponding Informative Reference in the Appendix.¶
The following Appendix section is to be removed prior to publication:¶
This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79.¶
Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet-Drafts is at https://datatracker.ietf.org/drafts/current/.¶
Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress."¶
This Internet-Draft will expire on 19 October 2023.¶
Copyright (c) 2023 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 Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License.¶
This document defines two YANG 1.1 [RFC7950] modules: the first defines a minimal grouping for configuring an HTTP client, and the second defines a minimal grouping for configuring an HTTP server. It is intended that these groupings will be used to help define the configuration for simple HTTP-based protocols (not for complete web servers or browsers).¶
This document presents one or more YANG modules [RFC7950] that are part of a collection of RFCs that work together to, ultimately, enable the configuration of both the clients and servers of both the NETCONF [RFC6241] and RESTCONF [RFC8040] protocols.¶
The normative dependency relationship between the various RFCs in this collection is presented in the below diagram. The labels in the diagram represent the primary purpose provided by each RFC. URLs for each RFC are provided below the diagram.¶
crypto-types
^ ^
/ \
/ \
truststore keystore
^ ^ ^ ^
| +---------+ | |
| | | |
| +------------+ |
tcp-client-server | / | |
^ ^ ssh-client-server | |
| | ^ tls-client-server
| | | ^ ^ http-client-server
| | | | | ^
| | | +-----+ +---------+ |
| | | | | |
| +-----------|--------|--------------+ | |
| | | | | |
+-----------+ | | | | |
| | | | | |
| | | | | |
netconf-client-server restconf-client-server
¶
| Label in Diagram | Originating RFC |
|---|---|
| crypto-types | [I-D.ietf-netconf-crypto-types] |
| truststore | [I-D.ietf-netconf-trust-anchors] |
| keystore | [I-D.ietf-netconf-keystore] |
| tcp-client-server | [I-D.ietf-netconf-tcp-client-server] |
| ssh-client-server | [I-D.ietf-netconf-ssh-client-server] |
| tls-client-server | [I-D.ietf-netconf-tls-client-server] |
| http-client-server | [I-D.ietf-netconf-http-client-server] |
| netconf-client-server | [I-D.ietf-netconf-netconf-client-server] |
| restconf-client-server | [I-D.ietf-netconf-restconf-client-server] |
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here.¶
This document is compliant with the Network Management Datastore Architecture (NMDA) [RFC8342]. For instance, as described in [I-D.ietf-netconf-trust-anchors] and [I-D.ietf-netconf-keystore], trust anchors and keys installed during manufacturing are expected to appear in <operational>.¶
Various examples used in this document use a placeholder value for binary data that has been base64 encoded (e.g., "BASE64VALUE="). This placeholder value is used as real base64 encoded structures are often many lines long and hence distracting to the example being presented.¶
This section defines a YANG 1.1 module called "ietf-http-client". A high-level overview of the module is provided in Section 2.1. Examples illustrating the module's use are provided in Examples (Section 2.2). The YANG module itself is defined in Section 2.3.¶
This section provides an overview of the "ietf-http-client" module in terms of its features and groupings.¶
The following diagram lists all the "feature" statements defined in the "ietf-http-client" module:¶
Features: +-- proxy-connect +-- basic-auth +-- tcp-supported +-- tls-supported¶
The diagram above uses syntax that is similar to but not defined in [RFC8340].¶
The "ietf-http-client" module defines the following "grouping" statements:¶
Each of these groupings are presented in the following subsections.¶
The following tree diagram [RFC8340] illustrates the "http-client-identity-grouping" grouping:¶
grouping http-client-identity-grouping:
+-- client-identity!
+-- (auth-type)
+--:(basic)
+-- basic {basic-auth}?
+-- user-id string
+---u ct:password-grouping
¶
Comments:¶
The following tree diagram [RFC8340] illustrates the "http-client-grouping" grouping:¶
grouping http-client-grouping:
+---u http-client-identity-grouping
+-- proxy-connect! {proxy-connect}?
+-- (proxy-type)
+--:(http)
| +-- http-proxy
| +-- tcp-client-parameters
| | +---u tcpc:tcp-client-grouping
| +-- http-client-parameters
| +---u http-client-identity-grouping
+--:(https)
+-- https-proxy
+-- tcp-client-parameters
| +---u tcpc:tcp-client-grouping
+-- tls-client-parameters
| +---u tlsc:tls-client-grouping
+-- http-client-parameters
+---u http-client-identity-grouping
¶
Comments:¶
For the referenced grouping statement(s):¶
The following tree diagram [RFC8340] illustrates the "http-client-stack-grouping" grouping:¶
grouping http-client-stack-grouping:
+-- (transport)
+--:(tcp) {tcp-supported}?
| +-- tcp
| +-- tcp-client-parameters
| | +---u tcpc:tcp-client-grouping
| +-- http-client-parameters
| +---u http-client-grouping
+--:(tls) {tls-supported}?
+-- tls
+-- tcp-client-parameters
| +---u tcpc:tcp-client-grouping
+-- tls-client-parameters
| +---u tlsc:tls-client-grouping
+-- http-client-parameters
+---u http-client-grouping
¶
Comments:¶
For the referenced grouping statement(s):¶
The "ietf-http-client" module defines only "grouping" statements that are used by other modules to instantiate protocol-accessible nodes.¶
This section presents two examples showing the http-client-grouping populated with some data.¶
The following example illustrates an HTTP client connecting directly to an HTTP server.¶
<!-- The outermost element below doesn't exist in the data model. -->
<!-- It simulates if the "grouping" were a "container" instead. -->
<http-client xmlns="urn:ietf:params:xml:ns:yang:ietf-http-client">
<client-identity>
<basic>
<user-id>bob</user-id>
<cleartext-password>secret</cleartext-password>
</basic>
</client-identity>
</http-client>
¶
The following example illustrates the same client connecting through an HTTP proxy. This example is consistent with examples presented in Section 2.2 of [I-D.ietf-netconf-trust-anchors] and Section 2.2 of [I-D.ietf-netconf-keystore].¶
=============== NOTE: '\' line wrapping per RFC 8792 ================
<!-- The outermost element below doesn't exist in the data model. -->
<!-- It simulates if the "grouping" were a "container" instead. -->
<http-client xmlns="urn:ietf:params:xml:ns:yang:ietf-http-client">
<client-identity>
<basic>
<user-id>bob</user-id>
<cleartext-password>secret</cleartext-password>
</basic>
</client-identity>
<proxy-connect>
<https-proxy>
<tcp-client-parameters>
<remote-address>corp-fw2.example.com</remote-address>
<keepalives>
<idle-time>15</idle-time>
<max-probes>3</max-probes>
<probe-interval>30</probe-interval>
</keepalives>
</tcp-client-parameters>
<tls-client-parameters>
<client-identity>
<certificate>
<keystore-reference>
<asymmetric-key>rsa-asymmetric-key</asymmetric-key>
<certificate>ex-rsa-cert</certificate>
</keystore-reference>
</certificate>
</client-identity>
<server-authentication>
<ca-certs>
<truststore-reference>trusted-server-ca-certs</truststor\
e-reference>
</ca-certs>
<ee-certs>
<truststore-reference>trusted-server-ee-certs</truststor\
e-reference>
</ee-certs>
</server-authentication>
</tls-client-parameters>
<http-client-parameters>
<client-identity>
<basic>
<user-id>local-app-1</user-id>
<cleartext-password>secret</cleartext-password>
</basic>
</client-identity>
</http-client-parameters>
</https-proxy>
</proxy-connect>
</http-client>
¶
This YANG module has normative references to [RFC6991] [RFC7617], [RFC9110], [I-D.ietf-netconf-crypto-types], [I-D.ietf-netconf-tcp-client-server], and [I-D.ietf-netconf-tls-client-server].¶
<CODE BEGINS> file "ietf-http-client@2023-04-17.yang"¶
module ietf-http-client {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-http-client";
prefix httpc;
import ietf-netconf-acm {
prefix nacm;
reference
"RFC 8341: Network Configuration Access Control Model";
}
import ietf-crypto-types {
prefix ct;
reference
"RFC AAAA: YANG Data Types and Groupings for Cryptography";
}
import ietf-tcp-client {
prefix tcpc;
reference
"RFC DDDD: YANG Groupings for TCP Clients and TCP Servers";
}
import ietf-tls-client {
prefix tlsc;
reference
"RFC FFFF: YANG Groupings for TLS Clients and TLS Servers";
}
organization
"IETF NETCONF (Network Configuration) Working Group";
contact
"WG Web: https://datatracker.ietf.org/wg/netconf
WG List: NETCONF WG list <mailto:netconf@ietf.org>
Author: Kent Watsen <mailto:kent+ietf@watsen.net>";
description
"This module defines reusable groupings for HTTP clients that
can be used as a basis for specific HTTP client instances.
Copyright (c) 2023 IETF Trust and the persons identified
as authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with
or without modification, is permitted pursuant to, and
subject to the license terms contained in, the Revised
BSD License set forth in Section 4.c of the IETF Trust's
Legal Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC GGGG
(https://www.rfc-editor.org/info/rfcGGGG); see the RFC
itself for full legal notices.
The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL',
'SHALL NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED',
'NOT RECOMMENDED', 'MAY', and 'OPTIONAL' in this document
are to be interpreted as described in BCP 14 (RFC 2119)
(RFC 8174) when, and only when, they appear in all
capitals, as shown here.";
revision 2023-04-17 {
description
"Initial version";
reference
"RFC GGGG: YANG Groupings for HTTP Clients and HTTP Servers";
}
// Features
feature proxy-connect {
description
"Indicates that the server supports configuring HTTP
clients to connect to a remote HTTP server via an
HTTP proxy.";
}
feature basic-auth {
description
"Indicates that the server supports configuring HTTP
clients to authenticate themselves to an HTTP server
using the 'basic' HTTP authentication scheme.";
reference
"RFC 7617: The 'Basic' HTTP Authentication Scheme";
}
feature tcp-supported {
description
"Indicates that the server supports configuring
HTTP 1.1/2.0 clients to initiate HTTP 1.1/2.0
connections over TCP.";
reference
"RFC 9110: HTTP Semantics";
}
feature tls-supported {
description
"Indicates that the server supports configuring
HTTP 1.1/2.0 clients to initiate HTTP 1.1/2.0
connections over TLS.";
reference
"RFC 9110: HTTP Semantics";
}
// Groupings
grouping http-client-identity-grouping {
description
"A grouping to provide HTTP credentials used by the
client to authenticate itself to the HTTP server.";
container client-identity {
nacm:default-deny-write;
presence
"Indicates that a client identity has been configured.
This statement is present so the mandatory descendant
nodes do not imply that this node must be configured.";
description
"The identity the HTTP client should use when
authenticating itself to the HTTP server.";
choice auth-type {
mandatory true;
description
"A choice amongst available authentication types.";
case basic {
container basic {
if-feature "basic-auth";
leaf user-id {
type string;
mandatory true;
description
"The user-id for the authenticating client.";
}
uses ct:password-grouping {
description
"The password for the authenticating client.";
}
description
"The 'basic' HTTP scheme credentials.";
reference
"RFC 7617: The 'Basic' HTTP Authentication Scheme";
}
}
}
}
} // grouping http-client-identity-grouping
grouping http-client-grouping {
description
"A reusable grouping for configuring a HTTP client.
This grouping is expected to be used in conjunction with
other configurations providing, e.g., the hostname or IP
address and port number the client initiates connections
to.
Note that this grouping uses fairly typical descendant
node names such that a stack of 'uses' statements will
have name conflicts. It is intended that the consuming
data model will resolve the issue (e.g., by wrapping
the 'uses' statement in a container called
'http-client-parameters'). This model purposely does
not do this itself so as to provide maximum flexibility
to consuming models.";
uses http-client-identity-grouping;
container proxy-connect {
nacm:default-deny-write;
if-feature "proxy-connect";
presence
"Indicates that a proxy server connections have been
configured. This statement is present so the mandatory
descendant nodes do not imply that this node must be
configured.";
description
"Configures the proxy server the HTTP-client is to
connect thru.";
choice proxy-type {
mandatory true;
description
"Choice amongst proxy server types.";
case http {
container http-proxy {
description
"Container for HTTP Proxy (Web Proxy) server
configuration parameters.";
container tcp-client-parameters {
description
"A wrapper around the TCP parameters to avoid
name collisions.";
uses tcpc:tcp-client-grouping;
}
container http-client-parameters {
description
"A wrapper around the HTTP parameters to avoid
name collisions.";
uses http-client-identity-grouping;
}
}
}
case https {
container https-proxy {
description
"Container for HTTPS Proxy (Secure Web Proxy) server
configuration parameters.";
container tcp-client-parameters {
description
"A wrapper around the TCP parameters to avoid
name collisions.";
uses tcpc:tcp-client-grouping;
}
container tls-client-parameters {
description
"A wrapper around the TLS parameters to avoid
name collisions.";
uses tlsc:tls-client-grouping;
}
container http-client-parameters {
description
"A wrapper around the HTTP parameters to avoid
name collisions.";
uses http-client-identity-grouping;
}
}
}
}
}
} // grouping http-client-grouping
grouping http-client-stack-grouping {
description
"A grouping that defines common HTTP-based protocol stacks.";
choice transport {
mandatory true;
description
"Choice amongst various transports type. TCP, with and
without TLS are defined here, with 'feature' statements
so that they may be disabled. Other transports MAY be
augmented in as 'case' statements by future efforts.";
case tcp {
if-feature "tcp-supported";
container tcp {
description
"Container for TCP-based HTTP protocols.";
container tcp-client-parameters {
description
"A wrapper around the TCP parameters to avoid
name collisions.";
uses tcpc:tcp-client-grouping;
}
container http-client-parameters {
description
"A wrapper around the HTTP parameters to avoid
name collisions.";
uses http-client-grouping;
}
}
}
case tls {
if-feature "tls-supported";
container tls {
description
"Container for TLS-based HTTP protocols.";
container tcp-client-parameters {
description
"A wrapper around the TCP parameters to avoid
name collisions.";
uses tcpc:tcp-client-grouping;
}
container tls-client-parameters {
description
"A wrapper around the TLS parameters to avoid
name collisions.";
uses tlsc:tls-client-grouping;
}
container http-client-parameters {
description
"A wrapper around the HTTP parameters to avoid
name collisions.";
uses http-client-grouping;
}
}
}
}
} // http-client-stack-grouping
}
¶
<CODE ENDS>¶
This section defines a YANG 1.1 module called "ietf-http-server". A high-level overview of the module is provided in Section 3.1. Examples illustrating the module's use are provided in Examples (Section 3.2). The YANG module itself is defined in Section 3.3.¶
This section provides an overview of the "ietf-http-server" module in terms of its features and groupings.¶
The following diagram lists all the "feature" statements defined in the "ietf-http-server" module:¶
Features: +-- client-auth-supported +-- local-users-supported +-- basic-auth +-- tcp-supported +-- tls-supported¶
The diagram above uses syntax that is similar to but not defined in [RFC8340].¶
The "ietf-http-server" module defines the following "grouping" statements:¶
Each of these groupings are presented in the following subsections.¶
The following tree diagram [RFC8340] illustrates the "http-server-grouping" grouping:¶
grouping http-server-grouping:
+-- server-name? string
+-- client-authentication! {client-auth-supported}?
+-- users {local-users-supported}?
+-- user* [user-id]
+-- user-id? string
+-- (auth-type)
+--:(basic)
+-- basic {basic-auth}?
+-- user-id? string
+-- password? ianach:crypt-hash
¶
Comments:¶
The following tree diagram [RFC8340] illustrates the "http-server-stack-grouping" grouping:¶
grouping http-server-stack-grouping:
+-- (transport)
+--:(tcp) {tcp-supported}?
| +-- tcp
| +-- tcp-server-parameters
| | +---u tcps:tcp-server-grouping
| +-- http-server-parameters
| +---u http-server-grouping
+--:(tls) {tls-supported}?
+-- tls
+-- tcp-server-parameters
| +---u tcps:tcp-server-grouping
+-- tls-server-parameters
| +---u tlss:tls-server-grouping
+-- http-server-parameters
+---u http-server-grouping
¶
Comments:¶
For the referenced grouping statement(s):¶
The "ietf-http-server" module defines only "grouping" statements that are used by other modules to instantiate protocol-accessible nodes.¶
This section presents an example showing the http-server-grouping populated with some data.¶
<!-- The outermost element below doesn't exist in the data model. --> <!-- It simulates if the "grouping" were a "container" instead. --> <http-server xmlns="urn:ietf:params:xml:ns:yang:ietf-http-server"> <server-name>foo.example.com</server-name> </http-server>¶
This YANG module has normative references to [RFC6991], [RFC7317], [RFC7617], [RFC9110], [I-D.ietf-netconf-tcp-client-server], and [I-D.ietf-netconf-tls-client-server].¶
<CODE BEGINS> file "ietf-http-server@2023-04-17.yang"¶
module ietf-http-server {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-http-server";
prefix https;
import iana-crypt-hash {
prefix ianach;
reference
"RFC 7317: A YANG Data Model for System Management";
}
import ietf-netconf-acm {
prefix nacm;
reference
"RFC 8341: Network Configuration Access Control Model";
}
import ietf-tcp-server {
prefix tcps;
reference
"RFC DDDD: YANG Groupings for TCP Clients and TCP Servers";
}
import ietf-tls-server {
prefix tlss;
reference
"RFC FFFF: YANG Groupings for TLS Clients and TLS Servers";
}
organization
"IETF NETCONF (Network Configuration) Working Group";
contact
"WG Web: https://datatracker.ietf.org/wg/netconf
WG List: NETCONF WG list <mailto:netconf@ietf.org>
Author: Kent Watsen <mailto:kent+ietf@watsen.net>";
description
"This module defines reusable groupings for HTTP servers that
can be used as a basis for specific HTTP server instances.
Copyright (c) 2023 IETF Trust and the persons identified
as authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with
or without modification, is permitted pursuant to, and
subject to the license terms contained in, the Revised
BSD License set forth in Section 4.c of the IETF Trust's
Legal Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC GGGG
(https://www.rfc-editor.org/info/rfcGGGG); see the RFC
itself for full legal notices.
The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL',
'SHALL NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED',
'NOT RECOMMENDED', 'MAY', and 'OPTIONAL' in this document
are to be interpreted as described in BCP 14 (RFC 2119)
(RFC 8174) when, and only when, they appear in all
capitals, as shown here.";
revision 2023-04-17 {
description
"Initial version";
reference
"RFC GGGG: YANG Groupings for HTTP Clients and HTTP Servers";
}
// Features
feature client-auth-supported {
description
"Indicates that the server supports configuring HTTP
servers to authenticate HTTP clients. HTTP-level client
authentication may not be needed when client authentication
is expected to occur only at another protocol layer (e.g.,
TLS).";
}
feature local-users-supported {
if-feature "client-auth-supported";
description
"Indicates that the server supports configuring client
authentication with its own database of local users, as
opposed to in an application specific location.";
}
feature basic-auth {
if-feature "local-users-supported";
description
"Indicates that the server supports configuring 'basic'
authentication credentials in its local user database.";
reference
"RFC 7617: The 'Basic' HTTP Authentication Scheme";
}
feature tcp-supported {
description
"Indicates that the server supports configuring HTTP
servers to listen for HTTP 1.1/2.0 connections over TCP.";
reference
"RFC 9110: HTTP Semantics";
}
feature tls-supported {
description
"Indicates that the server supports configuring HTTP
servers to listen for HTTP 1.1/2.0 connections over TLS.";
reference
"RFC 9110: HTTP Semantics";
}
// Groupings
grouping http-server-grouping {
description
"A reusable grouping for configuring an HTTP server.
Note that this grouping uses fairly typical descendant
node names such that a stack of 'uses' statements will
have name conflicts. It is intended that the consuming
data model will resolve the issue (e.g., by wrapping
the 'uses' statement in a container called
'http-server-parameters'). This model purposely does
not do this itself so as to provide maximum flexibility
to consuming models.";
leaf server-name {
nacm:default-deny-write;
type string;
description
"The value of the 'Server' header field. If not set, then
underlying software's default value is used. Set to the
empty string to disable.";
}
container client-authentication {
if-feature "client-auth-supported";
nacm:default-deny-write;
presence
"Indicates that HTTP based client authentication is
configured. This statement is present so the mandatory
descendant nodes do not imply that this node must be
configured.";
description
"Configures how the HTTP server can authenticate HTTP
clients. The HTTP server will request that the HTTP
client send authentication when needed.";
container users {
if-feature "local-users-supported";
description
"A list of locally configured users.";
list user {
key "user-id";
description
"The list of local users configured on this device.";
leaf user-id {
type string;
description
"The user-id for the authenticating client.";
}
choice auth-type {
mandatory true;
description
"The authentication type.";
case basic {
container basic {
if-feature "basic-auth";
leaf user-id {
type string;
description
"The user-id for the authenticating client.";
}
leaf password {
nacm:default-deny-write;
type ianach:crypt-hash;
description
"The password for the authenticating client.";
}
description
"The 'basic' HTTP scheme credentials.";
reference
"RFC 7617:
The 'Basic' HTTP Authentication Scheme";
}
}
}
}
}
} // container client-authentication
} // grouping http-server-grouping
grouping http-server-stack-grouping {
description
"A grouping that defines common HTTP-based protocol stacks.";
choice transport {
mandatory true;
description
"Choice amongst various transports type. TCP, with and
without TLS are defined here, with 'feature' statements
so that they may be disabled. Other transports MAY be
augmented in as 'case' statements by future efforts.";
case tcp {
if-feature "tcp-supported";
container tcp {
description
"Container for TCP-based HTTP protocols.";
container tcp-server-parameters {
description
"A wrapper around the TCP parameters to avoid
name collisions.";
uses tcps:tcp-server-grouping;
}
container http-server-parameters {
description
"A wrapper around the HTTP parameters to avoid
name collisions.";
uses http-server-grouping;
}
}
}
case tls {
if-feature "tls-supported";
container tls {
description
"Container for TLS-based HTTP protocols.";
container tcp-server-parameters {
description
"A wrapper around the TCP parameters to avoid
name collisions.";
uses tcps:tcp-server-grouping;
}
container tls-server-parameters {
description
"A wrapper around the TLS parameters to avoid
name collisions.";
uses tlss:tls-server-grouping;
}
container http-server-parameters {
description
"A wrapper around the HTTP parameters to avoid
name collisions.";
uses http-server-grouping;
}
}
}
}
} // http-server-stack-grouping
}
¶
<CODE ENDS>¶
The "ietf-http-client" YANG module defines "grouping" statements that are designed to be accessed via YANG based management protocols, such as NETCONF [RFC6241] and RESTCONF [RFC8040]. Both of these protocols have mandatory-to-implement secure transport layers (e.g., SSH, TLS) with mutual authentication.¶
The Network Access Control Model (NACM) [RFC8341] provides the means to restrict access for particular users to a pre-configured subset of all available protocol operations and content.¶
Since the module in this document only define groupings, these considerations are primarily for the designers of other modules that use these groupings.¶
One readable data node defined in this YANG module may be considered sensitive or vulnerable in some network environments. This node is as follows:¶
The "client-identity/basic/password" node:¶
Please be aware that this module uses the "key" and "private-key" nodes from the "ietf-crypto-types" module [I-D.ietf-netconf-crypto-types], where said nodes have the NACM extension "default-deny-all" set, thus preventing unrestricted read-access to the cleartext key values.¶
None of the writable data nodes defined in this YANG module are considered sensitive or vulnerable in network environments. The NACM "default-deny-write" extension has not been set for any data nodes defined in this module.¶
Please be aware that this module uses groupings from the "ietf-tls-client" and "ietf-tls-server" modules defined in [I-D.ietf-netconf-tls-client-server]. All of the data nodes defined in these groupings have the NACM extension "default-deny-write" set, thus preventing unrestricted write-access to the data nodes defined in those groupings.¶
This module does not define any RPCs, actions, or notifications, and thus the security consideration for such is not provided here.¶
The "ietf-http-server" YANG module defines "grouping" statements that are designed to be accessed via YANG based management protocols, such as NETCONF [RFC6241] and RESTCONF [RFC8040]. Both of these protocols have mandatory-to-implement secure transport layers (e.g., SSH, TLS) with mutual authentication.¶
The Network Access Control Model (NACM) [RFC8341] provides the means to restrict access for particular users to a pre-configured subset of all available protocol operations and content.¶
Since the module in this document only define groupings, these considerations are primarily for the designers of other modules that use these groupings.¶
None of the readable data nodes defined in this YANG module are considered sensitive or vulnerable in network environments. The NACM "default-deny-all" extension has not been set for any data nodes defined in this module.¶
None of the writable data nodes defined in this YANG module are considered sensitive or vulnerable in network environments. The NACM "default-deny-write" extension has not been set for any data nodes defined in this module.¶
Please be aware that this module uses groupings from the "ietf-tls-client" and "ietf-tls-server" modules defined in [I-D.ietf-netconf-tls-client-server]. All of the data nodes defined in these groupings have the NACM extension "default-deny-write" set, thus preventing unrestricted write-access to the data nodes defined in those groupings.¶
This module does not define any RPCs, actions, or notifications, and thus the security consideration for such is not provided here.¶
This document registers two URIs in the "ns" subregistry of the IETF XML Registry [RFC3688]. Following the format in [RFC3688], the following registrations are requested:¶
URI: urn:ietf:params:xml:ns:yang:ietf-http-client Registrant Contact: The IESG XML: N/A, the requested URI is an XML namespace. URI: urn:ietf:params:xml:ns:yang:ietf-http-server Registrant Contact: The IESG XML: N/A, the requested URI is an XML namespace.¶
This document registers two YANG modules in the YANG Module Names registry [RFC6020]. Following the format in [RFC6020], the following registrations are requested:¶
name: ietf-http-client namespace: urn:ietf:params:xml:ns:yang:ietf-http-client prefix: httpc reference: RFC GGGG name: ietf-http-server namespace: urn:ietf:params:xml:ns:yang:ietf-http-server prefix: https reference: RFC GGGG¶
This section is to be removed before publishing as an RFC.¶
The authors would like to thank for following for lively discussions on list and in the halls (ordered by first name): Ben Schwartz, Mark Nottingham, Mahesh Jethanandani, Rob Wilton (contributor), and Willy Tarreau.¶