1. Introduction
1.1. Overview
戦国 カグラ スロット will sign its .戦国 カグラ スロット zone files implementing Domain Name System Security Extensions (DNSSEC). The purpose of this DNSSEC Practice Statement (DPS) is to describe the critical security controls and procedures that 戦国 カグラ スロット will implement through its Back End Service Provider Afilias for key material storage, access and usage for its own keys and secure acceptance of registrants’ public-key material so as to provide a means for Internet stakeholders to evaluate the strength and security of the DNSSEC chain of trust for domain names within the .戦国 カグラ スロット TLD. This DPS does not apply to other domain names owned, registered, or used by 戦国 カグラ スロット. This document was created using the format described in RFC 6841.
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This document comprises the practices utilized by Afilias, the Back End Service Provider for the .戦国 カグラ スロット TLD, to operate DNS zones as it relates to the DNSSEC for the .戦国 カグラ スロット TLD.
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This section describes the various “stakeholders” of the functionality provided by the DNSSEC and the signed .戦国 カグラ スロット TLD.
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For the .戦国 カグラ スロット TLD Registry, 戦国 カグラ スロット operates as the registry operator (RO) and Afilias operates as the Back End Service Provider (BESP), where Afilias operates and performs the functions of maintaining the TLD’s zone on behalf of 戦国 カグラ スロット.
As the BESP, Afilias will perform the following functions for the .戦国 カグラ スロット TLD:
- Generate the Key Signing Keys (KSK) for the zone.
- Generate the Zone Signing Keys (ZSK) for the zone.
- Sign the ZSK using the KSK.
- Sign the relevant Resource Records of the zone using the ZSK.
- Update the ZSK and KSK as needed.
- Send Delegation Signer (DS) Resource records to ICANN for inclusion into the root zone.
- Receive DS Resource Records from accredited registrars, and update the zone accordingly.
- Update the WHOIS information accordingly.
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Registrars that are accredited by 戦国 カグラ スロット to register domain names within .戦国 カグラ スロット are required to make changes to the zone using one of two mechanisms: (1) via EPP, or (2) via a Web Administration Tool. The Web Administration Tool is an Afilias-provided front-end to EPP, so, in effect, all changes to the registry are made via EPP. For DNSSEC, registrars are expected to maintain Delegation Signer (DS) records with Afilias on behalf of their registrants.
1.3.3. Registrants
Registrants of .戦国 カグラ スロット domain names are responsible for ensuring that their second level domain zones are properly signed and maintained. They must also generate and upload DS records for their signed zones to their registrar (who, in turn, sends these to Afilias).
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Afilias maintains this specification on behalf of the .戦国 カグラ スロット TLD registry.
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Questions or concerns regarding this DPS, or the operation of a signed TLD should be sent to the Afilias Customer Support Center. They can be reached via:
Phone: +1 416.646.3306
Email: [email protected]
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The DPS is reviewed periodically and updated as appropriate.
All changes are reviewed by Afilias’ operations and security teams and submitted to 戦国 カグラ スロット’s and Afilias’ TLD and BESP management for approval. Once accepted, procedures are updated, and appropriate personnel are trained on any new or changed practice. Once all preparatory work has been completed, the DPS is published and becomes effective as of its publication.
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2.1. Repositories
Afilias manages the DPS repositories and its availability mechanisms, and 戦国 カグラ スロット publishes the DPS at .
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The “chain of trust” is maintained for the .戦国 カグラ スロット TLD zone by having Afilias send DS records to ICANN for inclusion in the root zone delegation of the TLD. These DS records correspond to at least one active KSK in the zone. As such, no publication of an additional trust anchor is required.
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Policies regarding restrictions on domain names within the .戦国 カグラ スロット zone are specified by 戦国 カグラ スロット, and can be found here: dpf.tokyo/legal/internet-services/dot戦国 カグラ スロット.html.
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戦国 カグラ スロット provides express permission to Afilias to permit DNSSEC for child zones in the .戦国 カグラ スロット TLD. Only registrars (on behalf of their registrants) are permitted to activate DNSSEC for a child zone. To activate DNSSEC, a registrar must submit a Delegation Signer (DS) record either via the Web Administration Tool, or via EPP (according to RFC 5910).
For EPP, each registrar has unique credentials to access the .戦国 カグラ スロット TLD registry, which are verified by Afilias before EPP transactions of any kind can be conducted. For the Web Administration Tool, certificates are used to uniquely identify each registrar.
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DS records are sent to Afilias by the registrar via EPP (specifically, according to RFC 5910). Once submitted to Afilias, the WHOIS data is changed, and the zone changes are automatically propagated out to the DNS infrastructure.
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It is the responsibility of the accredited registrar to ensure the integrity of the data submitted to Afilias. There is no requirement that a corresponding DNSKEY already be published in a zone before a DS record is submitted to the parent. This makes proof of possession of a private key unpredictable.
Afilias therefore does not perform any tests to prove possession of a private key.
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Only the sponsoring registrar for a domain name can add, change, or delete DS records for that domain name. Registrars must provide an Auth-Info code to verify any change for this domain name.
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DS records are removed using the appropriate EPP command, as specified by RFC 5910. Only the sponsoring registrar can request a DS record be removed, and then only if they include the correct Auth-Info code.
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Because this is facilitated via EPP, and the system is updated continuously, there is no additional procedure required for an emergency removal request.
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Afilias uses two geographically separate sites located in different countries that are not part of its offices to provide redundant and backup DNSSEC services for the .戦国 カグラ スロット TLD. Both sites are physically protected environments that deter, prevent, and detect unauthorized use of, access to, and disclosure of sensitive information and systems. Both facilities limit access to authorized personnel. Visitors are only permitted by escort from Authorized personnel, and for a specific purpose (such as hardware repair by a technician).
Both facilities provide redundant and backup power, air conditioning, and fire suppression and protection services. Reasonable precautions have been taken to minimize the impact of water exposure to Afilias systems.
Media with sensitive information is stored within Afilias facilities with appropriate physical and logical access controls designed to limit access to authorized personnel.
Sensitive documents, materials, and media are shredded or rendered unreadable before disposal.
Afilias performs routine backups of critical system data and maintains an off-site backup with a bonded third party storage facility.
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Afilias provides at least two operational teams with access to and responsibility for the DNSSEC signer systems for the .戦国 カグラ スロット TLD. Each team member holds a part of the password necessary to grant access to the signer systems. Any task performed on a signer system requires an authorized representative from each team to be present.
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Afilias requires that all personnel taking part in a trusted role such as providing DNSSEC services have to have been working for Afilias for at least one year and must have the qualifications necessary for the job role.
Afilias provides training to all personnel upon hire as well as requisite training needed to perform job responsibilities. Refresher training and updates are provided as needed. Personnel and rotated and replaced as needed.
In limited circumstances, contractors may be permitted to occupy a trusted role. Any such contractor is required to meet the same criteria applied to an Afilias employee in a comparable position.
Afilias provides all employees with the materials and documentation necessary to perform their job responsibilities.
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All key life cycle events for domains within the .戦国 カグラ スロット TLD, including but not limited to generation, activation, rollover, destruction, and use, whether successful or unsuccessful, are logged with a system that includes mechanisms to protect the log files from unauthorized viewing, modification, deletion, or other tampering.
Access to Afilias’ physical facilities is logged by the facility and the log is only accessible to authorized personnel.
Afilias monitors all log entries for alerts based on irregularities and incidents. The Afilias security team reviews all audit logs at least weekly for suspicious or unusual activity.
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In the event of a key compromise or disaster of its DNSSEC services for the .戦国 カグラ スロット TLD, Afilias’ incident response team would be notified. The response team has documented procedures for investigation, escalation, and response. The team is responsible for assessing the situation, developing an action plan, and implementing the action plan with approval from executive management.
Afilias maintains redundant facilities to ensure immediate availability of a disaster recovery site should one site become unavailable. Key data is cloned, encrypted, and sent to a hot spare in the same facility, and to two spares in the redundant facility. The ability to encrypt and decrypt the key data resides entirely within each system's High Security Module, and exists nowhere external to the signing systems.
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Afilias has adopted a DNSSEC termination plan in the event that the roles and responsibilities of the signing services must transition to other entities. Afilias will coordinate with 戦国 カグラ スロット and all required parties in order to execute the transition in a secure and transparent manner.
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All key pairs are generated on the signer systems according to parameters set by Afilias’ operational team. The signer systems meet the requirements of FIPS 140-2 level 3. The public key is automatically inserted in the TLD zone file as a DNSKEY resource record as part of the signing process. A DS record is made available for submission to the parent (root) zone.
The signer system maintains the separation of the KSK from the ZSK and manages the use of each key pair as appropriate. Each key is used for only one zone.
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All signing systems are FIPS 140-2 level 3 certified. No unencrypted access to the private key is permitted. Access to the signer system is specified in the Procedural and Personnel Control sections. Multiple redundant signing systems are maintained. The systems include a mechanism to backup key pairs and other operational parameters to each other in a secure manner. Private keys are not otherwise backed up, escrowed, or archived. When a private key is deactivated it is destroyed by the signing system.
A trusted team has the authority to create, activate, and deactivate key pairs, and executes the responsibility according to documented policies and procedures.
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Afilias ensures that the systems maintaining key software and data files are trustworthy systems secure from unauthorized access. In addition, Afilias limits access to production servers to those individuals with a valid business reason for such access. General application users do not have accounts on production servers.
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The signing systems are placed in Afilias’ production systems, which are logically separated from all other systems. Use of normal network security mechanisms such as firewalls mitigate intrusion threats; only restricted role users are allowed access to production systems, and their work is logged.
5.5. Timestamping
The signer systems securely synchronize their system clocks with a trusted time source inside the Afilias network.
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DNSSEC applications developed and implemented by Afilias conform to its development and change management procedures. All software is traceable using version control systems. Software updates in production are part of a package update mechanism, controlled via restricted role access and updated via automated recipes. All updates and patches are subject to complete verification prior to deployment.
Afilias uses a third-party solution on its signer systems, where updates are tested in a secure lab environment prior to deployment.
6. Zone Signing
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Key Signing Key:
Afilias uses a key length of 2048 bits with RSA as the generation algorithm.
Zone Signing Key:
Afilias uses a key length of 1024 bits with RSA as the generation algorithm.
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Authenticated denial of existence will be provided through the use of NSEC3 records as specified in
RFC 5155.
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SHA1, using RSA.
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Afilias will roll the ZSK with a pre-publishing scheme as described in RFC 4641, section 4.2.1.1. ZSK rollover is carried out once a month.
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Afilias will roll the KSK with a double-signing scheme as described in RFC 4641, section 4.2.1.2. There are no planned KSK rollover frequencies defined at this time.
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Zones are signed once every 8 or 9 days (4 times a month), with a signature life-time of 20 days. Jitter is introduced to avoid presumptive attacks during signing.
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Verification of the zone signing key set is performed by validating the public key data contained in the Key Signing Record.
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All RRset signatures are verified prior to publication.
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DNSKey: 15 minutes
NSEC3: SOA minimum (24 hours
Delegation Signer (DS): 24 hours
RRSIG: varies depending on the RR covered
7. Compliance Audit
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Afilias intends to conduct compliance audits related to its general DNSSEC services at least biennially.
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The auditor of Afilias’ compliance audits will be an entity who is proficient in the technologies they are auditing, and are independent from Afilias.
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Auditors must be independent to Afilias.
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Environmental, network and software controls, operations, key management practices and operations.
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Any gaps identified in the audit will result in the creation of an action map, which lists what actions are necessary for the resolution of each gap. Afilias’ management will design and implement mitigating steps to close the gaps identified.
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Afilias will provide results upon request by contacting the Afilias Customer Support Center. They can be reached via:
Phone: +1 416.646.3306
Email: [email protected]
8. Legal Matters
This DPS is to be construed in accordance with and governed by the internal laws of Ireland without giving effect to any choice of law rule that would cause the application of the laws of any jurisdiction other than the internal laws of Ireland.
The following material shall be considered confidential:
- Private keys
- Information necessary to retrieve/recover private keys
- Disaster recovery plans (DRPs)
- Any operational details relevant to the management and administration of DNS keys, including but not limited to network, software, hardware details.
戦国 カグラ スロット and Afilias do not implicitly or explicitly provide any warranty, and have no legal responsibility for any procedure or function within this DPS. 戦国 カグラ スロット and Afilias shall not be liable for any financial damages or losses arising from the use of keys, or any other liabilities. All legal questions or concerns should be sent to [email protected].