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<<<<<<< HEAD
Internet Engineering Task Force A. Dulaunoy
=======
Internet Engineering Task Force Dulaunoy
>>>>>>> 73452f098972e1de078bcb34facde9bdaf3ce686
Internet-Draft CIRCL
Intended status: Informational A. Kaplan
Expires: June 28, 2014 CERT.at
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queries, users of multiple Passive DNS servers will be able to
combine result sets easily.
Status of this Memo
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
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1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Requirements Language . . . . . . . . . . . . . . . . . . . 3
2. Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . 3
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=======
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3
2. Limitation . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Common Output Format . . . . . . . . . . . . . . . . . . . . 3
3.1. Overview and Example . . . . . . . . . . . . . . . . . . 3
3.2. Mandatory Fields . . . . . . . . . . . . . . . . . . . . 4
3.2.1. rrname . . . . . . . . . . . . . . . . . . . . . . . 4
3.2.2. rrtype . . . . . . . . . . . . . . . . . . . . . . . 4
3.2.3. rdata . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2.4. time_first . . . . . . . . . . . . . . . . . . . . . 4
3.2.5. time_last . . . . . . . . . . . . . . . . . . . . . . 5
3.3. Optional Fields . . . . . . . . . . . . . . . . . . . . . 5
3.3.1. count . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3.2. bailiwick . . . . . . . . . . . . . . . . . . . . . . 5
3.4. Additional Fields . . . . . . . . . . . . . . . . . . . . 5
3.4.1. sensor_id . . . . . . . . . . . . . . . . . . . . . . 5
3.4.2. zone_time_first . . . . . . . . . . . . . . . . . . . 5
3.4.3. zone_time_last . . . . . . . . . . . . . . . . . . . 6
3.5. Additional Fields Registry . . . . . . . . . . . . . . . 6
4. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 6
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6
6. Security Considerations . . . . . . . . . . . . . . . . . . . 6
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 6
7.1. Normative References . . . . . . . . . . . . . . . . . . 6
7.2. References . . . . . . . . . . . . . . . . . . . . . . . 7
7.3. Informative References . . . . . . . . . . . . . . . . . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 8
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1. Introduction
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their search. This document describes the output format of four
Passive DNS Systems ([DNSDB],[PDNSCERTAT], [PDNSCIRCL] and [PDNSCOF])
which are in use today and which already share a nearly identical
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output format. As the format and the meaning of output fields from
each Passive DNS need to be consistent, we propose in this document a
solution to commonly name each field along with their corresponding
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"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
2. Limitation
As a Passive DNS can include protection mechanisms for their
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they assume that answers must be identical across multiple Passive
DNS Servers.
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3. Common Output Format
The formatting of the answer follows the JSON [RFC4627] format. The
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A sample output using the JSON format:
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... (list of )...
{ "count": 97167,
"time_first": "1277353744",
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addition, a client MUST be able to handle a decimal value (as
mentioned above) as answer.
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3.2.3. rdata
This field returns the data of the queried resource. In general,
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3.2.4. time_first
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This field returns the first time that the record / unique tuple
(rrname, rrtype, rdata) has been seen by the passive DNS. The date
is expressed in seconds (decimal ascii) since 1st of January 1970
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Implementations MAY support the following fields:
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3.4.1. sensor_id
This field returns the sensor information where the record was seen.
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is expressed in seconds (decimal ascii) since 1st of January 1970
(unix timestamp). The time zone MUST be UTC.
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3.4.3. zone_time_last
This field returns the last time that the unique tuple (rrname,
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In accordance with [RFC6648], designers of new passive DNS
applications that would need additional fields can request and
register new field name at
https://github.com/adulau/pdns-qof/wiki/Additional-Fields.
register new field name at https://github.com/adulau/pdns-qof/wiki/
Additional-Fields.
4. Acknowledgements
Thanks to the Passive DNS developers who contributed to the document.
5. IANA Considerations
This memo includes no request to IANA.
6. Security Considerations
In some cases, Passive DNS output might contain confidential
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querying multiple Passive DNS and aggregating the data, the
sensitivity of the data must be considered.
7. References
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7.1. Normative References
[RFC1034] Mockapetris, P., "Domain names - concepts and facilities",
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[RFC3912] Daigle, L., "WHOIS Protocol Specification", RFC 3912,
September 2004.
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[RFC4627] Crockford, D., "The application/json Media Type for
JavaScript Object Notation (JSON)", RFC 4627, July 2006.
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[PDNSCERTAT]
"pDNS presentation at 4th Centr R&D workshop Frankfurt Jun
5th 2012", 2012, <http://www.centr.org/system/files/
agenda/attachment/rd4-papst-passive_dns.pdf>.
5th 2012", 2012, <http://www.centr.org/system/files/agenda
/attachment/rd4-papst-passive_dns.pdf>.
[PDNSCIRCL]
"CIRCL Passive DNS", 2012, <http://pdns.circl.lu/>.
[PDNSCLIENT]
"Queries 5 major Passive DNS databases: BFK, CERTEE,
DNSParse, ISC, and VirusTotal.", 2013, <https://github.com
/chrislee35/passivedns-client>.
[PDNSCOF] "Passive DNS server interface using the common output
format", 2013, <https://github.com/adulau/pdns-qof-server/
>.
[REST] "Representational State Transfer (REST)", 2000,
<http://www.ics.uci.edu/~fielding/pubs/dissertation/
rest_arch_style.htm>.
[WEINERPDNS]
"Passive DNS Replication", 2005, <http://www.enyo.de/fw/
software/dnslogger/first2005-paper.pdf>.
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[PDNSCLIENT]
"Queries 5 major Passive DNS databases: BFK, CERTEE,
DNSParse, ISC, and VirusTotal.", 2013,
<https://github.com/chrislee35/passivedns-client>.
[PDNSCOF] "Passive DNS server interface using the common output
format", 2013,
<https://github.com/adulau/pdns-qof-server/>.
[REST] "Representational State Transfer (REST)", 2000, <http://
www.ics.uci.edu/~fielding/pubs/dissertation/
rest_arch_style.htm>.
[WEINERPDNS]
"Passive DNS Replication", 2005, <http://www.enyo.de/fw/
software/dnslogger/first2005-paper.pdf>.
7.3. Informative References
[I-D.narten-iana-considerations-rfc2434bis]
Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs",
draft-narten-iana-considerations-rfc2434bis-09 (work in
progress), March 2008.
IANA Considerations Section in RFCs", draft-narten-iana-
considerations-rfc2434bis-09 (work in progress), March
2008.
[RFC3552] Rescorla, E. and B. Korver, "Guidelines for Writing RFC
Text on Security Considerations", BCP 72, RFC 3552,
July 2003.
Text on Security Considerations", BCP 72, RFC 3552, July
2003.
Authors' Addresses
Alexandre Dulaunoy
CIRCL
41, avenue de la gare
Luxembourg, L-1611
Luxembourg L-1611
LU
Phone: (+352) 247 88444
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URI: http://www.circl.lu/
<<<<<<< HEAD
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L. Aaron Kaplan
=======
Leon Aaron Kaplan
>>>>>>> 73452f098972e1de078bcb34facde9bdaf3ce686
CERT.at
Karlsplatz 1/2/9
Vienna, A-1010
Vienna A-1010
AT
Phone: +43 1 5056416 78
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Paul Vixie
Farsight Security, Inc.
Phone:
Email: paul@redbarn.org
URI: /
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Henry Stern
Cisco
1741 Brunswick Street, Suite 500
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