Malin
8d4eaa1489
- Clone all 5 Zonemaster component repos (LDNS, Engine, CLI, Backend, GUI) - Dockerfile.backend: 8-stage multi-stage build LDNS→Engine→CLI→Backend - Dockerfile.gui: Astro static build served via nginx - docker-compose.yml: backend (internal) + frontend (port 5353) - nginx.conf: root redirects to /es/, /api/ proxied to backend - zonemaster-gui/config.ts: defaultLanguage set to 'es' (Spanish) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
195 lines
10 KiB
Markdown
195 lines
10 KiB
Markdown
# CONNECTIVITY02: TCP connectivity to name servers
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## Test case identifier
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**CONNECTIVITY02**
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## Table of contents
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* [Objective](#objective)
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* [Scope](#scope)
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* [Inputs](#inputs)
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* [Summary](#summary)
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* [Test procedure](#test-procedure)
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* [Outcome(s)](#outcomes)
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* [Special procedural requirements](#special-procedural-requirements)
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* [Intercase dependencies](#intercase-dependencies)
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* [Terminology](#terminology)
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## Objective
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TCP is a protocol to reach a general purpose name server hosting a zone, "All
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general-purpose DNS implementations MUST support \[...] TCP transport"
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([RFC 7766][RFC 7766#5], section 5).
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This Test Case will verify if the name servers of *Child Zone* are reachable over
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TCP. The name servers tested are both those in the delegation of *Child Zone* and
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those in the NS records in the *Child Zone* itself.
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This Test Case will mimic the tests done by [Connectivity01], but over TCP
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instead:
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* Name Server responding to a query.
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* Name Server including SOA record of *Child Zone* in the answer section in the
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response on a SOA query for *Child Zone*.
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* Name Server including NS record of *Child Zone* in the answer section in the
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response on an NS query for *Child Zone*.
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* Name Server setting the AA flag in a response with SOA or NS in answer section.
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* Name Server responding with expected [RCODE Name] ("NoError") on query for SOA
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or NS for *Child Zone*.
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## Scope
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The only TCP port defined for DNS is port 53 ([RFC 1035][RFC 1035#4.2.1], section
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4.2.1), and that is the only port used by this and other Test Cases for DNS
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queries to the name servers.
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UDP connectivity is tested by Test Case [Connectivity01].
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## Inputs
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* "Child Zone" - The domain name to be tested.
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## Summary
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Message Tag |Level |Arguments | Message ID for message tag
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:-----------------------------------|:------|:----------|:---------------------------------------------------------------------------------------
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CN02_MISSING_NS_RECORD_TCP |WARNING| ns | Nameserver {ns} responds to a NS query with no NS records in the answer section over TCP.
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CN02_MISSING_SOA_RECORD_TCP |WARNING| ns | Nameserver {ns} responds to a SOA query with no SOA records in the answer section over TCP.
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CN02_NO_RESPONSE_NS_QUERY_TCP |WARNING| ns | Nameserver {ns} does not respond to NS queries over TCP.
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CN02_NO_RESPONSE_SOA_QUERY_TCP |WARNING| ns | Nameserver {ns} does not respond to SOA queries over TCP.
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CN02_NO_RESPONSE_TCP |WARNING| ns | Nameserver {ns} does not respond to any queries over TCP.
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CN02_NS_RECORD_NOT_AA_TCP |WARNING| ns | Nameserver {ns} does not give an authoritative response on an NS query over TCP.
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CN02_SOA_RECORD_NOT_AA_TCP |WARNING| ns | Nameserver {ns} does not give an authoritative response on an SOA query over TCP.
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CN02_UNEXPECTED_RCODE_NS_QUERY_TCP |WARNING| ns, rcode | Nameserver {ns} responds with an unexpected RCODE ({rcode}) on an NS query over TCP.
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CN02_UNEXPECTED_RCODE_SOA_QUERY_TCP |WARNING| ns, rcode | Nameserver {ns} responds with an unexpected RCODE ({rcode}) on an SOA query over TCP.
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CN02_WRONG_NS_RECORD_TCP |WARNING| ns, , domain_found, domain_expected | Nameserver {ns} responds with a wrong owner name ({domain_found} instead of {domain_expected}) on NS queries over TCP.
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CN02_WRONG_SOA_RECORD_TCP |WARNING| ns, , domain_found, domain_expected | Nameserver {ns} responds with a wrong owner name ({domain_found} instead of {domain_expected}) on SOA queries over TCP.
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The value in the Level column is the default severity level of the message. The
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severity level can be changed in the [Zonemaster-Engine profile]. Also see the
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[Severity Level Definitions] document.
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The argument names in the Arguments column lists the arguments used in the
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message. The argument names are defined in the [argument list].
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## Test procedure
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In this section and unless otherwise specified below, the term "[DNS Query]"
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follows the specification for DNS queries as specified in
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[DNS Query and Response Defaults]. The handling of the DNS responses on the DNS
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queries follow, unless otherwise specified below, what is specified for
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[DNS Response] in the same specification.
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1. Create [DNS Queries][DNS Query]:
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1. Query type SOA and query name *Child Zone* over TCP ("SOA Query TCP").
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1. Query type NS and query name *Child Zone* over TCP ("NS Query TCP").
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2. Obtain the set of name server IP addresses using [Method4] and [Method5]
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("Name Server IP").
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3. For each name server in *Name Server IP* do:
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1. Send *SOA Query TCP* and *NS Query TCP* to the name server and collect
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the [DNS Responses][DNS Response].
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2. If there is no DNS response on neither query, then:
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1. Output *[CN02_NO_RESPONSE_TCP]* with name and IP address of the name
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server.
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2. Go to next name server.
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3. Else:
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1. Process the response on *SOA Query TCP*:
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1. If there is no [DNS response], then output
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*[CN02_NO_RESPONSE_SOA_QUERY_TCP]* with name and IP address of the
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name server.
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2. Else, if [RCODE Name] is not "NoError" then output
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*[CN02_UNEXPECTED_RCODE_SOA_QUERY_TCP]* with [RCODE Name] and name
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and IP address of the name server.
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3. Else, if there is no SOA record in the answer section, then
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output *[CN02_MISSING_SOA_RECORD_TCP]* with name and IP address of
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the name server.
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4. Else, if the SOA record has owner name other than *Child Zone*
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then output *[CN02_WRONG_SOA_RECORD_TCP]* with name and IP address of
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the name server, the SOA record owner name and *Child Zone*.
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5. Else, if AA flag is unset, then output *[CN02_SOA_RECORD_NOT_AA_TCP]*
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with name and IP address of the name server.
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2. Process the response on *NS Query TCP*:
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1. If there is no [DNS Response], then output
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*[CN02_NO_RESPONSE_NS_QUERY_TCP]* with name and IP address of the
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name server.
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2. Else, if [RCODE Name] is not "NoError" then output
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*[CN02_UNEXPECTED_RCODE_NS_QUERY_TCP]* with [RCODE Name] and name and
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IP address of the name server.
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3. Else, if there is no NS record in the answer section, then
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output *[CN02_MISSING_NS_RECORD_TCP]* with name and IP address of the
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name server.
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4. Else, if the NS record has owner name other than *Child Zone*
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then output *[CN02_WRONG_NS_RECORD_TCP]* with name and IP address of
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the name server, the NS record owner name and *Child Zone*.
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5. Else, if AA flag is unset, then output *[CN02_NS_RECORD_NOT_AA_TCP]*
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with name and IP address of the name server.
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## Outcome(s)
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The outcome of this Test Case is "fail" if there is at least one message
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with the severity level *[ERROR]* or *[CRITICAL]*.
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The outcome of this Test Case is "warning" if there is at least one message
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with the severity level *[WARNING]*, but no message with severity level
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*ERROR* or *CRITICAL*.
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In other cases, no message or only messages with severity level
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*[INFO]* or *[NOTICE]*, the outcome of this Test Case is "pass".
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## Special procedural requirements
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If either IPv4 or IPv6 transport is disabled, skip sending queries over that
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transport protocol.
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## Intercase dependencies
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None.
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## Terminology
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No special terminology for this Test Case.
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[Argument list]: ../ArgumentsForTestCaseMessages.md
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[CN02_MISSING_NS_RECORD_TCP]: #summary
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[CN02_MISSING_SOA_RECORD_TCP]: #summary
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[CN02_NO_RESPONSE_NS_QUERY_TCP]: #summary
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[CN02_NO_RESPONSE_SOA_QUERY_TCP]: #summary
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[CN02_NO_RESPONSE_TCP]: #summary
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[CN02_NS_RECORD_NOT_AA_TCP]: #summary
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[CN02_SOA_RECORD_NOT_AA_TCP]: #summary
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[CN02_UNEXPECTED_RCODE_NS_QUERY_TCP]: #summary
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[CN02_UNEXPECTED_RCODE_SOA_QUERY_TCP]: #summary
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[CN02_WRONG_NS_RECORD_TCP]: #summary
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[CN02_WRONG_SOA_RECORD_TCP]: #summary
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[CRITICAL]: ../SeverityLevelDefinitions.md#critical
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[Connectivity01]: connectivity01.md
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[DEBUG]: ../SeverityLevelDefinitions.md#notice
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[DNS Query and Response Defaults]: ../DNSQueryAndResponseDefaults.md
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[DNS Query]: ../DNSQueryAndResponseDefaults.md#default-setting-in-dns-query
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[DNS Response]: ../DNSQueryAndResponseDefaults.md#default-handling-of-a-dns-response
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[ERROR]: ../SeverityLevelDefinitions.md#error
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[INFO]: ../SeverityLevelDefinitions.md#info
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[Method4]: ../Methods.md#method-4-obtain-glue-address-records-from-parent
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[Method5]: ../Methods.md#method-5-obtain-the-name-server-address-records-from-child
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[NOTICE]: ../SeverityLevelDefinitions.md#notice
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[RCODE Name]: https://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml#dns-parameters-6
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[RFC 1035#4.2.1]: https://www.rfc-editor.org/rfc/rfc1035#section-4.2.1
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[RFC 7766#5]: https://www.rfc-editor.org/rfc/rfc7766#section-5
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[Severity Level Definitions]: ../SeverityLevelDefinitions.md
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[WARNING]: ../SeverityLevelDefinitions.md#warning
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[Zonemaster-Engine profile]: ../../../configuration/profiles.md
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