DNSSEC at Scale. Dani Grant CloudFlare
|
|
|
- Eileen Webb
- 5 years ago
- Views:
Transcription
1 DNSSEC at Scale Dani Grant CloudFlare
2 CloudFlare - Authoritative DNS provider (includes DNSSEC for free) - 4M+ domains billion queries per day - 76 edge locations in 40 countries (growing)
3 DNSSEC at Scale 1. Elliptic Curves 2. Negative Answers 3. Registrar and Registry Support
4 Elliptic Curves Speed and Size
5 Background - CloudFlare mitigates large DDoS attacks (often 400M+ pps) - DDoS is sometimes done through DNS amplification (small DNS query returns large DNS answer) - Signed zones with large signature sizes are good for attackers doing amplification attacks
6 Elliptic Curves: Small Packet Size - CloudFlare uses ECDSA to keep key and signature sizes small - Almost all DNS answers CloudFlare returns are < 512 bytes, even with DNSSEC
7 Why does ECDSA have smaller key sizes?
8 Energy to break 228 bit RSA key vs. 228 bit ECDSA key RSA: Energy to boil a teaspoon of water
9 Energy to break 228 bit RSA key vs. 228 bit ECDSA key RSA: same as boiling a teaspoon of water ECDSA: boiling all the water on earth
10 Comparing DNSKey Answers ietf.org. 985 IN DNSKEY AwEAAdDECajHaTjfSoNTY58WcBah1BxPKVIHBz4IfLjfqMvium4lgKtK ZLe97DgJ5/NQrNEGGQmr6fKvUj67cfrZUojZ2cGRizVhgkOqZ9scaTVX NuXLM5Tw7VWOVIceeXAuuH2mPIiEV6MhJYUsW6dvmNsJ4XwCgNgroAmX homeiwejbb+wjyzq5gtzhbfkvxacswtictddhcueoesvpi5wh94vlubh HfiytNPZLrObhUCHT6k0tNE6phLoHnXWU+6vpsYpz6GhMw/R9BFxW5Pd PFIWBgoWk2/XFVRSKG9Lr61b2z1R126xeUwvw46RVy3hanV3vNO7LM5H niqayclbbhk= ietf.org. 985 IN DNSKEY AwEAAavjQ1H6pE8FV8LGP0wQBFVL0EM9BRfqxz9p/sZ+8AByqyFHLdZc HoOGF7CgB5OKYMvGOgysuYQloPlwbq7Ws5WywbutbXyG24lMWy4jijlJ UsaFrS5EvUu4ydmuRc/TGnEXnN1XQkO+waIT4cLtrmcWjoY8Oqud6lDa Jdj1cKr2nX1NrmMRowIu3DIVtGbQJmzpukpDVZaYMMAm8M5vz4U2vRCV ETLgDoQ7rhsiD127J8gVExjO8B0113jCajbFRcMtUtFTjH4z7jXP2ZzD cxsgpe4lyfuenfqacrbrle6oaykhr7rlpqqmw58nieljufomcb/bdrlg byteurflnxs= ietf.org. 985 IN RRSIG DNSKEY ietf.org. lv7deo/dz+5q6mza9nst4qq7ibfu5s73yv7+ghoryhis/3jmsmy8nia9 7xoQcYhw1kYNqIgJYZ39XbKcmLyxVG9lzIMFcJOWcWA7QZQ8dW7IbQ4Z /jm8tuoxwwcmo9m1mgswyfpupz6ielh8cznylhug+rzjn1t31wionet/ xudrm5btkotjfeykaeyvpiuc5n3+r3icd8u96ls1ybkckxvzbcadmbne r21/avpl7ymphedir4ubstj4xhr0pg5wcuszs0vrrkmpzryrw/xw1gwl qriyy/i4rxl9xyabip39ed7b7jvyyrtjobsnjpdd1blchm+dllzl/7q1 y/vfxw== ietf.org. 985 IN RRSIG DNSKEY ietf.org. J3FK20+dp6Dy8QnDE4xlv9LJroKfrYQIa4i+ymYWulZqL0GQhEIkkfLb vyjmrnovphkjznibobfzdgjhfbdur9gonuwmkm4isbc4gbakgnrirmh7 963HJ+ngsgHsfRTUHp27ISTgPw/SaxrUOz5JJJytNvr6eTiIsKHgtpaP Xn44E210XQd5ak71//xY2/yCNJHjN3zH41Z0ipDG8UlITWzScFRZcEA+ 9frDMBwiv7M9CBbOBeMNDAZXXa6JjkuASROmNIu8mU2XRa+Q8yDnYfF1 1r7JrdASF+zLIrxBX0HHjWtCjn+GvEoPDDTDN6J9oDHlmt8WH6Tmt57h oiuc+g== RSA: 1181 bytes cloudflare.com IN DNSKEY mdsswuyr3dpw132moi8v9xeswe8jto0dxcjjnopkl+gqjxpvxckhaef+ KkxLbxILfDLUT0rAK9iUzy1L53eKGQ== cloudflare.com IN DNSKEY kopbw9wmyz7ggcjnq6ayhyhhadnmyelktqt+qrgrzpwsccr/lbcrm10z 1PuQHB3Azhii+sb0PYFkH1ruxLhe5g== cloudflare.com IN RRSIG DNSKEY cloudflare.com. kgh/iayn5endrnfafjsnzpjhqvcyxqolhdgrkhmxwvvjzyac/892ffwa r5jo6u/57jnmjtcgf3p+yhmlibke1w== ECDSA: 313 bytes
11 ECDSA is fast...important when you are computing 56.9 billion signatures a day.
12 Speeding up ECDSA in Go - Native implementation in assembler (by Vlad Krasnov) - 21x speed improvements - Now part of standard Go crypto library as of Go Takes CloudFlare seconds to sign a DNS record Before After Speedup ECDSA Sign 1,015,006 ns/op 48,741 ns/op 20.8x ECDSA Verify 3,086,282 ns/op 146,991 ns/op 21.0x
13 Negative Answers Saving Compute
14 Two problems with negative answers 1. Requires authoritative server to return previous and next name 2. 2 NSEC + 2 NSEC RRSIG to say one thing
15 The trouble with previous and next name.
16 Background on CloudFlare DNS technology - In house DNS server in Go called RRDNS - No concept of zone file, instead SQL database of DNS records - Business logic in DNS, we dynamically generate answers on the fly
17 The problem with previous + next name 1. No zone file, so requires sorted search of the database 2. Dynamic answers make previous and next name hard 3. NSEC exposes zone info (and NSEC3 can be dictionary attacked)
18 RFC4470 White Lies - Randomly generate previous and next name for NSEC - Helps prevent zone walking and extra database lookups
19 The trouble with 2 NSEC to say 1 thing.
20 RFC4470 White Lies - Still, two separately signed NSEC records to say one thing
21 CloudFlare Black Lies for NXDOMAIN - The next name is always \000.[themissingname] - One NSEC per answer cloudflare.com IN SOA ns3.cloudflare.com. dns.cloudflare.com bogus.cloudflare.com IN NSEC \000.bogus.cloudflare.com. RRSIG NSEC cloudflare.com IN RRSIG SOA cloudflare. com. mgx1fncjvdopwhmoqm6+kcpbi/6zc8lf00ccg3da1rnii6hxmrqnfiug dsngbt3vyo0+8asz1l0vjiopcdnotw== bogus.cloudflare.com IN RRSIG NSEC cloudflare. com. 8nbevvyI/RsSjunQzjlPkIHphiAOu5gti+aj2ucBx3Nhc7cnaHtJbJ5C dfrof7eozupeiegf0kttmyhayp3twq==
22 Comparing Negative Answers ietf.org IN SOA ns0.amsl.com. glen.amsl.com ietf.org IN RRSIG SOA ietf.org. P8XoJx+SK5nUZAV/IqiJrsoKtP1c+GXmp3FvEOUZPFn1VwW33242LVrJ GMI5HHjMEX07EzOXZyLnQeEvlf2QLxRIQm1wAnE6W4SUp7TgKUZ7NJHP dglr2gqkyim4ci7ikyj3vk7ngcase5jqizum7ofxxyo9/ypz4mx7cow6 XBOMYS2v8VY3DICeJdZsHJnVKlgl8L7/yqrL8qhkSW1yDo3YtB9cZEjB OVk8uRDxK7aHkEnMRz0LODOJ10AngJpg9LrkZ1CO444RhZGgTbwzN9Vq rdyh47cn3h8ofeojtycjvux5cczazdinbsjq9wnainbgiqatpknrir77 hcehhq== ietf.org IN NSEC ietf1._domainkey.ietf.org. A NS SOA MX TXT AAAA RRSIG NSEC DNSKEY SPF ietf.org IN RRSIG NSEC ietf.org. B9z/JJs30tkn0DyxVz0zaRlm4HkeNY1TqYmr9rx8rH7kC32PWZ1Fooy6 16qmB33/cvD2wtOCKMnNQPdTG2qUs/RuVxqRPZaQojIVZsy/GYONmlap BptzgOJLP7/HOxgYFgMt5q/91JHfp6Mn0sd218/H86Aa98RCXwUOzZnW bdttjsmbaqonupquragz8zggztfmqt5dnenraq5uqdzw738vqjywppfu 9GSLkT7RCh3kgbNcSaXeuWfFnxG1R2SdlRoDICos+RqdDM+23BHGYkYc /NEBLtjYGxPqYCMe/7lOtWQjtQOkqylAr1r7pSI2NOA9mexa7yTuXH+x o/rzra== IN NSEC cloudflare-verify.ietf.org. A RRSIG NSEC IN RRSIG NSEC ietf.org. U+hEHcTps2IC8VKS61rU3MDZq+U0KG4/oJjIHVYbrWufQ7NdMdnY6hCL OmQtsvuZVRQjWHmowRhMj83JMUagxoZuWTg6GuLPin3c7PkRimfBx7jI wjqorwcuvpbh92a/s/2hxbma3ptdzl2udly4z7wdo62rbxgu/lx1jtqy FoJJLJfJ/C+ngVMIE/QVneXSJkAjHV96FSEnreF81V62x9azv3AHo4tl qnoyvrdtk+cr072a5smtwmkdfcir2fi11tagiyhr55yaiollpdez5koj BfMstC/JXVURJMM+1vCPjxvwYzTZN8iICf1AupyyR8BNWxgic5yh1ljH 1AuAVQ== NSEC: 1094 bytes cloudflare.com IN SOA ns3.cloudflare.com. dns.cloudflare.com blog.cloudflare.com IN NSEC \000.blog.cloudflare.com. RRSIG NSEC cloudflare.com IN RRSIG SOA cloudflare.com. kgjtjduunc/yx8ywqpol4zuur8s8yaxzi26kwbi6s3hdtry2t6lnp1ou QK10Ut7DXO/XhyZddRBVj3pIpWYdBQ== blog.cloudflare.com IN RRSIG NSEC cloudflare.com. 8BKAAS8EXNJbm8DxEI1OOBba8KaiimIuB47mPlteiZf3sVLGN1edsrXE +q+phashefyg5mhfcbjrbi6b3eoxow== Black Lies: 357 bytes
23 Problems with NODATA: - Would have to search the database for existing types (CPU expensive) - Not always possible because of dynamic answers
24 CloudFlare Black Lies for NODATA - Set all the types, except for the type you asked for - When you ask for TXT: blog.cloudflare.com IN NSEC \000.blog.cloudflare.com. A WKS HINFO MX TXT AAAA LOC SRV CERT SSHFP IPSECKEY RRSIG NSEC TLSA HIP OPENPGPKEY SPF - When you ask for MX: blog.cloudflare.com IN NSEC \000.blog.cloudflare.com. A WKS HINFO MX TXT AAAA LOC SRV CERT SSHFP IPSECKEY RRSIG NSEC TLSA HIP OPENPGPKEY SPF
25 Registrar and Registry Support The Last Mile
26 Registrar and Registry Support - Big difference between being an Internet Standard and being adopted in practice - DNSSEC is required by ICANN registrar agreement - DNSSEC Algorithm 13 (ECDSA) has been a standard for years - Still, many registrars + registries do not have support
27 In order to enable the DNSSEC, the domain name must be under [the registrar s] DNS management which means the domain will need to be moved to our servers. The changes [i.e. adding the DS] have not been completed and this request has been closed.
28 I talked to support at the registrar and they said that I would need to enter the DS record with you since my DNS is hosted here.
29 Registrar Support: The DNSSEC option is not yet operational, we still don t provide support for it. Registrant: So if I add my DS record and it says DNSSEC Active, DNSSEC won t really be active? Registrar Support: Exactly.
30 Have added support since our launch: - Norid (.no) - SIDN (.nl) - Eurid (.eu) - enic (.eu) - NZRS (.nz) - NIC.br (.br) - DNSimple - Hover - Internet.bs - OVH - Metaname
31
32
33 Interested in getting involved?
34
I certify that this DNS record set is correct Problem: how to certify a negative response, i.e. that a record doesn t exist?
RRSIG: I certify that this DNS record set is correct Problem: how to certify a negative response, i.e. that a record doesn t exist? NSEC: I certify that there are no DNS records (of type X) whose record
Hoda Rohani Anastasios Poulidis Supervisor: Jeroen Scheerder. System and Network Engineering July 2014
Hoda Rohani Anastasios Poulidis Supervisor: Jeroen Scheerder System and Network Engineering July 2014 DNS Main Components Server Side: Authoritative Servers Resolvers (Recursive Resolvers, cache) Client
Step by step DNSSEC deployment in.se. Anne-Marie Eklund Löwinder Quality & Security
Step by step DNSSEC deployment in.se Anne-Marie Eklund Löwinder Quality & Security Manager,.SE amel@iis.se @amelsec www.iis.se Timeline 2005 signing of the.se zone. 2006 allowing DS records from friendly
Implementing DNSSEC with DynDNS and GoDaddy
Implementing DNSSEC with DynDNS and GoDaddy Lawrence E. Hughes Sixscape Communications 27 December 2017 DNSSEC is an IETF standard for adding security to the DNS system, by digitally signing every resource
OpenINTEL an infrastructure for long-term, large-scale and high-performance active DNS measurements. Design and Analysis of Communication Systems
OpenINTEL an infrastructure for long-term, large-scale and high-performance active DNS measurements DACS Design and Analysis of Communication Systems Why measure DNS? (Almost) every networked service relies
Keeping DNS parents and children in sync at Internet Speed! Ólafur Guðmundsson
Keeping DNS parents and children in sync at Internet Speed! Ólafur Guðmundsson olafur@cloudflare.com How long does it take to? Post a new selfie on Facebook and all your friends to be notified few seconds
Some DNSSEC thoughts. DNSOPS.JP BOF Interop Japan Geoff Huston Chief Scientist, APNIC June 2007
Some DNSSEC thoughts DNSOPS.JP BOF Interop Japan 2007 Geoff Huston Chief Scientist, APNIC June 2007 The DNS is a miracle! You send out a question into the net And an answer comes back! Somehow But WHO
RSA and ECDSA. Geoff Huston APNIC. #apricot2017
RSA and ECDSA Geoff Huston APNIC It s all about Cryptography Why use Cryptography? Public key cryptography can be used in a number of ways: protecting a session from third party eavesdroppers Encryption
DNSSEC. Lutz Donnerhacke. db089309: 1c1c 6311 ef09 d819 e029 65be bfb6 c9cb dig +dnssec e164.arpa. naptr
DNSSEC Lutz Donnerhacke db089309: 1c1c 6311 ef09 d819 e029 65be bfb6 c9cb dig +dnssec 1.6.5.3.7.5.1.4.6.3.9.4.e164.arpa. naptr 1 A protocol from better times An ancient protocol People were friendly and
BIND-USERS and Other Debugging Experiences. Mark Andrews Internet Systems Consortium
BIND-USERS and Other Debugging Experiences Mark Andrews Internet Systems Consortium Mark_Andrews@isc.org http://isc.org BIND-USERS and Other Debugging Experiences We will look at some typical debugging
DNS and DNSSEC Management and Monitoring Changes Required During A Transition To DNSSEC. Wes Hardaker
DNS and DNSSEC Management and Monitoring Changes Required During A Transition To DNSSEC Wes Hardaker Overview Business Model Changes Relationship Requirements Relationship with
Internet Engineering Task Force (IETF) Request for Comments: E. Hunt ISC January 2019
Internet Engineering Task Force (IETF) Request for Comments: 8482 Updates: 1034, 1035 Category: Standards Track ISSN: 2070-1721 J. Abley Afilias O. Gudmundsson M. Majkowski Cloudflare Inc. E. Hunt ISC
A paper on DNSSEC - NSEC3 with Opt-Out
A paper on DNSSEC - NSEC3 with Opt-Out DNSSEC A Way Forward for TLD Registries Method for faster adoption of DNSSEC Providing greater security with minimal impact on customers, registries and Zone Management
DNSSEC in Switzerland 2 nd DENIC Testbed Meeting
DNSSEC in Switzerland 2 nd DENIC Testbed Meeting Frankfurt, 26. January 2010 Samuel Benz samuel.benz@switch.ch About SWITCH The SWITCH foundation operates the national research network since 1987 SWITCH
Evaluation and consideration of multiple responses. Kazunori Fujiwara, JPRS OARC 28
Evaluation and consideration of multiple responses Kazunori Fujiwara, JPRS fujiwara@jprs.co.jp OARC 28 Past discussion Background DNS is query response based protocol Each query contains one QNAME / QTYPE
Deploying New DNSSEC Algorithms
Deploying New DNSSEC Algorithms ICANN 53 DNSSEC Workshop June 24, 2015 Buenos Aires, Argentina Dan York, Internet Society DNSSEC Algorithms Used to generate keys for signing DNSKEY Used in DNSSEC signatures
Table of Contents. DNS security. Alternative DNS security mechanism. DNSSEC specification. The long (and winding) road to the DNSSEC specification
Table of Contents DNS security Karst Koymans Informatics Institute University of Amsterdam (version 1.19, 2011/09/27 14:18:11) Friday, September 23, 2011 The long (and winding) road to the DNSSEC specification
The State and Challenges of the DNSSEC Deployment. Eric Osterweil Michael Ryan Dan Massey Lixia Zhang
The State and Challenges of the DNSSEC Deployment Eric Osterweil Michael Ryan Dan Massey Lixia Zhang 1 Monitoring Shows What s Working and What needs Work DNS operations must already deal with widespread
DNSSEC Why, how, why now? Olaf Kolkman (NLnet Labs)
DNSSEC Why, how, why now? Olaf Kolkman (NLnet Labs) olaf@nlnetlabs.nl Stichting NLnet Labs page 2 Registrars/ Registrants DNS Architecture As friend secondary As ISP Cache server Registry DB primary As
Toward Unspoofable Network Identifiers. CS 585 Fall 2009
Toward Unspoofable Network Identifiers CS 585 Fall 2009 The Problem DNS Spoofing Attacks (e.g., Kaminsky) At link (Ethernet) and IP layers, either: Software sets the source address in the packet, or Software
Internet Engineering Task Force (IETF) April Elliptic Curve Digital Signature Algorithm (DSA) for DNSSEC
Internet Engineering Task Force (IETF) Request for Comments: 6605 Category: Standards Track ISSN: 2070-1721 P. Hoffman VPN Consortium W.C.A. Wijngaards NLnet Labs April 2012 Abstract Elliptic Curve Digital
5 DNS Security Extensions DNSSEC
Information Security 1 (InfSi1) 5 DNS Security Extensions DNSSEC Prof. Dr. Andreas Steffen Institute for Internet Technologies and Applications (ITA) Andreas Steffen, 22.10.2013, 5-DNSSEC.pptx 1 Information
DNSSEC DNS SECURITY EXTENSIONS INTRODUCTION TO DNSSEC FOR SECURING DNS QUERIES AND INFORMATION
DNSSEC DNS SECURITY EXTENSIONS INTRODUCTION TO DNSSEC FOR SECURING DNS QUERIES AND INFORMATION Peter R. Egli 1/10 Contents 1. Security Problems of DNS 2. Solutions for securing DNS 3. Security with DNSSEC
DNS SECurity Extensions technical overview
The EURid Insights series aims to analyse specific aspects of the domainname environment. The reports are based on surveys, studies and research developed by EURid in cooperation with industry experts
DNS. A Massively Distributed Database. Justin Scott December 12, 2018
DNS A Massively Distributed Database Justin Scott December 12, 2018 What is DNS? Translates Hostnames to IP Addresses What is DNS? Example: www.serverlogic.com 23.185.0.4 What is DNS? Example: www.serverlogic.com
ECE 435 Network Engineering Lecture 7
ECE 435 Network Engineering Lecture 7 Vince Weaver http://web.eece.maine.edu/~vweaver vincent.weaver@maine.edu 25 September 2018 HW#3 was Posted Announcements 1 HW#2 Review C code will be discussed next
DNSSEC en.mx. Network Information Center México
DNSSEC en.mx Network Information Center México 2 Agenda 1. About NIC México 2..mx DNSSEC test bed 3. Education about DNSSEC 4. NSEC zone walking 3 About NIC México cctld operator of.mx (México). National
An Overview of DNSSEC. Cesar Diaz! lacnic.net!
An Overview of DNSSEC Cesar Diaz! cesar@ lacnic.net! 1 DNSSEC??? The DNS Security Extension (DNS SEC) attach special kind of information called criptographic signatures to the queries and response that
DNS. Introduction To. everything you never wanted to know about IP directory services
Introduction To DNS everything you never wanted to know about IP directory services Linux Users Victoria, April 3 rd 2007 what is the domain name system anyway? it's like a phone book...kinda DNS is (1)
DNS/DNSSEC Workshop. In Collaboration with APNIC and HKIRC Hong Kong. Champika Wijayatunga Regional Security Engagement Manager Asia Pacific
DNS/DNSSEC Workshop In Collaboration with APNIC and HKIRC Hong Kong Champika Wijayatunga Regional Security Engagement Manager Asia Pacific 22-24 January 2018 1 Agenda 1 2 3 Introduction to DNS DNS Features
Domain Name System (DNS)
Domain Name System (DNS) Computer Networks Lecture 9 http://goo.gl/pze5o8 Domain Name System Naming service used in the Internet Accomplishes mapping of logical ("domain") names to IP addresses (and other
Transaction oriented DNS flow analysis (WIP)
Transaction oriented DNS flow analysis (WIP) Shigeya Suzuki / Bill Manning WIDE Project USC/ISI & Keio University + Auto-ID Labs Japan CAIDA Workshop 2006 @ISI, March 17th 2006 Topics Current on-going
Draft Applicant Guidebook, v3
Draft Applicant Guidebook, v3 Module 5 Please note that this is a discussion draft only. Potential applicants should not rely on any of the proposed details of the new gtld program as the program remains
DNSSEC for ISPs workshop João Damas
DNSSEC for ISPs workshop João Damas (joao@isc.org) 1 Outline of workshop Brief intro to DNSSEC Overview of zone signing DNSSEC validation trust anchors validation impact of enabling validation debugging
Less is More Cipher-Suite Negotiation for DNSSEC
Less is More Cipher-Suite Negotiation for DNSSEC Amir Herzberg Bar-Ilan University Haya Shulman Technische Universität Darmstadt Bruno Crispo Trento University Domain Name System (DNS) Lookup services
ARIN Support for DNSSEC and RPKI. ION San Diego 11 December 2012 Pete Toscano, ARIN
ARIN Support for DNSSEC and ION San Diego 11 December 2012 Pete Toscano, ARIN 2 DNS and BGP They have been around for a long time. DNS: 1982 BGP: 1989 They are not very secure. Methods for securing them
THE BRUTAL WORLD OF DNSSEC
THE BRUTAL WORLD OF DNSSEC Patrik Fältström Head of Technology Netnod 1 Security Issues with DNS Zone Administrator Bad Data False Master Caching Resolver Zonefile Master Slave slave slave False Cache
The impact of DNSSEC on k.root-servers.net and ns-pri.ripe.net
The impact of DNSSEC on k.root-servers.net and ns-pri.ripe.net Olaf M. Kolkman Question What would be the immediate and initial effect on memory, CPU and bandwidth resources if we were to deploy DNSSEC
The accidental hacker DNS Amplifica7on Norid registrar seminar Registrarseminar 2013 Oslo, NO wed, december 4th, 2013 Marco Davids
The accidental hacker DNS Amplifica7on Norid registrar seminar 2013 Registrarseminar 2013 Oslo, NO wed, december 4th, 2013 Marco Davids 1 Pleased to meet you! Personalia: Marco Davids Technical Advisor
SecSpider: Distributed DNSSEC Monitoring and Key Learning
SecSpider: Distributed DNSSEC Monitoring and Key Learning Eric Osterweil UCLA Joint work with Dan Massey and Lixia Zhang Colorado State University & UCLA 1 Who is Deploying DNSSEC? Monitoring Started From
DNS/DNSSEC Workshop. In Collaboration with APNIC and HKIRC Hong Kong. Champika Wijayatunga Regional Security Engagement Manager Asia Pacific
DNS/DNSSEC Workshop In Collaboration with APNIC and HKIRC Hong Kong Champika Wijayatunga Regional Security Engagement Manager Asia Pacific 22-24 January 2018 1 DNSSEC 2 2 DNS: Data Flow Zone administrator
More on DNS and DNSSEC
More on DNS and DNSSEC CS 161: Computer Security Prof. Raluca Ada Popa March 6, 2018 A subset of the slides adapted from David Wagner Domain names Domain names are human friendly names to identify servers
Who s Asking? Geoff Huston, Joao Damas APNIC. Roy Arends ICANN
Who s Asking? Geoff Huston, Joao Damas APNIC Roy Arends ICANN Background Experiments that are intended to expose the way in which recursive resolvers interact with the DNS root and its authoritative servers
DNSSEC Trust tree: (A) ---dnslab.org. (DS keytag: 9247 dig (DNSKEY keytag. ---org. (DS keytag: d
DNSSEC Trust tree: www.dnslab.org. (A) ---dnslab.org. (DNSKEY keytag: 7308 alg ---dnslab.org. (DNSKEY keytag: 9247 ---dnslab.org. (DS keytag: 9247 dig DNSSEC ---org. (DNSKEY keytag: 24209 a Domain Name
Re-engineering the DNS One Resolver at a Time. Paul Wilson Director General APNIC channeling Geoff Huston Chief Scientist
Re-engineering the DNS One Resolver at a Time Paul Wilson Director General APNIC channeling Geoff Huston Chief Scientist 1 In this presentation I ll talk about the DNS, and the root server infrastructure
Measuring DNSSEC validation deployment with RIPE ATLAS. Willem Toorop (presenting) Nicolas Canceill.
Measuring DNSSEC validation deployment with RPE ATLAS Willem Toorop (presenting) Willem@.nl Nicolas Canceill nicolas.canceill@os3.nl Willem Toorop ( ) 1 / 11 Research scope Research question What is the
DNSSEC. CS 161: Computer Security Prof. David Wagner. April 11, 2016
DNSSEC CS 161: Computer Security Prof. David Wagner April 11, 2016 DNSSEC Last lecture, you invented DNSSEC. Well, the basic ideas, anyway: Sign all DNS records. Signatures let you verify answer to DNS
DNS Security and DNSSEC in the root zone Luzern, Switzerland February 2010
DNS Security and DNSSEC in the root zone Luzern, Switzerland February 2010 Kim Davies Manager, Root Zone Services Internet Corporation for Assigned Names & Numbers Recap DNS originally not designed with
CS 356 Using Cryptographic Tools to Secure the Domain Name System (DNS) Spring 2017
CS 356 Using Cryptographic Tools to Secure the Domain Name System (DNS) Spring 2017 Background Motivation Overview Network Infrastructure Security DNS and DNS Vulnerabilities The DNS Security Extensions
DENIC DNSSEC Testbed Software support for DNSSEC Ralf Weber
DENIC DNSSEC Testbed Software support for DNSSEC Ralf Weber (ralf.weber@nominum.com) Who is Nominum? Mission Product Leadership Industry Expertise Deliver the Trusted Internet Experience Strategic Partners:
Applicability Statement: DNS Security (DNSSEC) DNSKEY Algorithm Implementation Status
Internet Engineering Task Force (IETF) S. Rose Request for Comments: 6944 NIST Updates: 2536, 2539, 3110, 4034, 4398, April 2013 5155, 5702, 5933 Category: Standards Track ISSN: 2070-1721 Applicability
DNSSEC for ISPs workshop.! João Damas
DNSSEC for ISPs workshop!!! João Damas (joao@isc.org) 1 Outline of workshop Brief intro to DNSSEC (30 ) Overview of zone signing (30 ) DNSSEC validation (60 ) trust anchors validation impact of enabling
Overview. Last Lecture. This Lecture. Next Lecture. Scheduled tasks and log management. DNS and BIND Reference: DNS and BIND, 4 th Edition, O Reilly
Last Lecture Overview Scheduled tasks and log management This Lecture DNS and BIND Reference: DNS and BIND, 4 th Edition, O Reilly Next Lecture Address assignment (DHCP) TELE 301 Lecture 11: DNS 1 TELE
Draft Applicant Guidebook, v4
Draft Applicant Guidebook, v4 Module 5 Please note that this is a discussion draft only. Potential applicants should not rely on any of the proposed details of the new gtld program as the program remains
DNS Anycast Statistic Collection
DNS Anycast Statistic Collection RIPE 61 Measurement Analysis and Tools Working Group 18 Nov 2010 Edward Lewis Neustar 1 What s so hard about reporting? 2 Collecting DNS Statistics (Generic) The Technical
A Longitudinal, End-to-End View of the DNSSEC Ecosystem
A Longitudinal, End-to-End View of the DNSSEC Ecosystem Taejoong (tijay) Chung, Roland van Rijswijk-Deij, Bala Chandrasekaran David Choffnes, Dave Levin, Bruce M. Maggs, Alan Mislove, Christo Wilson 1
EPP keyrelay: A solution for DNS operator changes with DNSSEC
EPP keyrelay: A solution for DNS operator changes with DNSSEC 10-04-2013 ICANN DNSSEC workshop Beijing Antoin Verschuren DNSSEC in.nl Recent figures: 5.211.124 domains 1.425.018 DNSSEC domains (27,35%)
Test cases for domain checks a step towards a best prac5ce. Mats Du(erg,.SE Sandoche Balakrichenan, AFNIC
Test cases for domain checks a step towards a best prac5ce Mats Du(erg,.SE Sandoche Balakrichenan, AFNIC Zonemaster Upcoming tool for test of delegacon of a domain The development of Zonemaster has several
Web Security. Mahalingam Ramkumar
Web Security Mahalingam Ramkumar Web Security Abusing cookies Phishing, Spreading misinformation You are not seeing what you think you are! HREFs, Ill-constructed strings in HREFs Dynamic HTML, Scripting
DNSSEC for the Root Zone. NZNOG Hamilton, NZ January 2010
DNSSEC for the Root Zone NZNOG Hamilton, NZ January 2010 Joe Abley, ICANN This design is the result of a cooperation between ICANN & VeriSign with support from the U.S. DoC NTIA Design Design Requirements
Documentation. Name Server Predelegation Check
Name Server Predelegation Check Doc. version: 1.4.1 Doc. status: Final Doc. date: 01.12.2015 Doc. name: Name Server Predelegation Check- -DNS Services-V1.4.1-2015-12-01 Copyright 2015 DENIC eg Imprint
DNSSEC All You Need To Know To Get Started
DNSSEC All You Need To Know To Get Started Olaf M. Kolkman RIPE NCC A Semi Technical Introduction Why do we need DNSSEC What does DNSSEC provide How does DNSSEC work Question: www.ripe.net A Reminder:
TSIGKILL: Bypassing dynamic DNS updates authentication through signature forgery
TSIGKILL: Bypassing dynamic DNS updates authentication through signature forgery or a tale on how to audit a DNS server when you don t really know anything about DNS Date 17/11/2017 GreHack By Clément
Domain Name System Security
Domain Name System Security T-110.4100 Tietokoneverkot September 2010 Bengt Sahlin 2011/09/27 Bengt Sahlin 1 Objectives Provide DNS basics, essential for understanding DNS security
A Security Evaluation of DNSSEC with NSEC Review
A Security Evaluation of DNSSEC with NSEC Review Network Security Instructor:Dr. Shishir Nagaraja Submitted By: Jyoti Leeka November 16, 2011 1 Introduction to the topic and the reason for the topic being
Domain Name System Security
Slide title 70 pt APITALS Domain Name System Security e subtitle um 30 pt Bengt Sahlin Ericsson Research NomadicLab Bengt.Sahlin@ericsson.com Objectives Provide DNS basics, essential for understanding
Domain Name Service. DNS Overview. October 2009 Computer Networking 1
Domain Name Service DNS Overview October 2009 Computer Networking 1 Why DNS? Addresses are used to locate objects (contain routing information) Names are easier to remember and use than numbers DNS provides
Afilias DNSSEC Practice Statement (DPS) Version
Afilias DNSSEC Practice Statement (DPS) Version 1.07 2018-02-26 Page 1 of 8 1. INTRODUCTION 1.1. Overview This document was created using the template provided under the current practicing documentation.
Domain Name System Security
Domain Name System Security T-110.4100 Tietokoneverkot October 2008 Bengt Sahlin 2008/10/02 Bengt Sahlin 1 Objectives Provide DNS basics, essential for understanding DNS security
Some Internet exploits target name resolution servers. DNSSEC uses cryptography to protect the name resolution
SYSADMIN DNSSEC Sergey Ilin, Fotolia Trusted name resolution with DNSSEC CHAIN OF TRUST Some Internet exploits target name resolution servers. DNSSEC uses cryptography to protect the name resolution service.
Harness Your Internet Activity
Harness Your Internet Activity Enabling Efficiency and Service Differentiation Ralf Weber October 13, 2014 Authoritative DNS Proven High-performance Tested with up to 1 Billion resource records per server
DNSSEC for the Root Zone. ICANN 37 Nairobi March 2010
DNSSEC for the Root Zone ICANN 37 Nairobi March 2010 Kim Davies, ICANN This design is the result of a cooperation between ICANN & VeriSign with support from the U.S. DoC NTIA Design Design Requirements
4. Performance Specifications. 4.1 Goals and intentions of Service Level Agreements and Public Service Monitoring. Goals of Service Level Agreements:
4. Performance Specifications 4.1 Goals and intentions of Service Level Agreements and Public Service Monitoring Goals of Service Level Agreements: Service Level Agreements are set between ICANN and Registry
Table of Contents. DNS security basics. What DNSSEC has to offer. In what sense is DNS insecure? Why DNS needs to be secured.
Table of Contents DNS security basics The basics Karst Koymans (with Niels Sijm) Informatics Institute University of Amsterdam (version 2.3, 2013/09/13 11:46:36) Tuesday, Sep 17, 2013 Why DNS needs to
DANE Best Current Practice
DANE Best Current Practice draft-dukhovni-dane-ops-01 Viktor Dukhovni & Wes Hardaker IETF 87, Berlin July 2013 General DANE Guidelines (Type Independent) Large DNS payload issues Issues with large UDP
DNS Mark Kosters Carlos Martínez {ARIN, LACNIC} CTO
DNS Workshop @CaribNOG12 Mark Kosters Carlos Martínez {ARIN, LACNIC} CTO DNS Refresher and Intro to DNS Security Extension (DNSSEC) Outline Introduction DNSSEC mechanisms to establish authenticity and
Introduction to the DANE Protocol
Introduction to the DANE Protocol ICANN 46 April 10, 2013 Internet Society Deploy360 Programme Providing real-world deployment info for IPv6, DNSSEC and other Internet technologies: Case Studies Tutorials
Defeating DNS Amplification Attacks. UKNOF Manchester Central, UK January Ralf Weber Senior Infrastructure Architect
Defeating DNS Amplification Attacks UKNOF Manchester Central, UK January 21 2014 Ralf Weber Senior Infrastructure Architect History of DNS Amplification DNS amplification attacks aren't new Periodically
How to Configure the DNS Server
Make the Barracuda Link Balancer an Authoritative DNS host and configure the DNS Server for inbound load balancing. Step 1. Enable Authoritative DNS Enable Authoritative DNS on the Barracuda Link Balancer
QNAME minimisation. Ralph Dolmans (NLnet Labs) https://www.nlnetlabs.nl/ March 2016 Stichting NLnet Labs
QNAME minimisation Ralph Dolmans ralph@nlnetlabs.nl (NLnet Labs) March 2016 Stichting NLnet Labs page 2 Introduction About NLnet Labs A not for profit, public benefit foundation develop Open Source software
gtld Applicant Guidebook (v ) Module 5
gtld Applicant Guidebook (v. 2012-06-04) Module 5 4 June 2012 This module describes the final steps required of an applicant for completion of the process, including execution of a registry agreement with
DNS. Some advanced topics. Karst Koymans. Informatics Institute University of Amsterdam. (version 17.2, 2017/09/25 12:41:57)
DNS Some advanced topics Karst Koymans Informatics Institute University of Amsterdam (version 17.2, 2017/09/25 12:41:57) Friday, September 22, 2017 Karst Koymans (UvA) DNS Friday, September 22, 2017 1
DNS security extensions
DNS security extensions ENOG IV / RIPE NCC Regional Meeting 23 24 October 2012, Moscow Security related RR CERT TLSA, SMIMEA* (DANE) CAA* SSHFP SPF PKIX problems Self-signed certificates (~48% web servers)
Distributed Naming. EECS 591 Farnam Jahanian University of Michigan. Reading List
Distributed Naming EECS 591 Farnam Jahanian University of Michigan Reading List Tanenbaum Chapter 4.1-4.2, 4.3(optional) Any problem in computer science can be solved with another layer of indirection
Root Servers. Root hints file come in many names (db.cache, named.root, named.cache, named.ca) See root-servers.org for more detail
What is DNS? Systems to convert domain names into ip addresses: For an instance; www.tashicell.com 118.103.136.66 Reverse: 118.103.136.66 www.tashicell.com DNS Hierarchy Root Servers The top of the DNS
Network Working Group
Network Working Group R. Arends Request for Comments: 4035 Telematica Instituut Obsoletes: 2535, 3008, 3090, 3445, 3655, 3658, R. Austein 3755, 3757, 3845 ISC Updates: 1034, 1035, 2136, 2181, 2308, 3225,
Measuring the effects of DNSSEC deployment on query load
Measuring the effects of DNSSEC deployment on query load Jelte Jansen NLnet Labs NLnet Labs document 26-2 May 1, 26 Abstract Ripe NCC recently started signing the zones on their DNS servers. This document
DNSSEC operational experiences and recommendations. Antti Ristimäki, CSC/Funet
DNSSEC operational experiences and recommendations Antti Ristimäki, CSC/Funet Agenda Funet DNSSEC status A short DNSSEC tutorial Zone signing considerations Private key security Network layer impacts Monitoring
DNSSEC KSK-2010 Trust Anchor Signal Analysis
DNSSEC KSK-2010 Trust Anchor Signal Analysis MAPRG @ IETF102 1 Overview Background: DNSSEC KSK rollover and plan Problems with the KSK rollover Case study analysis: difficulty in identifying old Trust
DNSSEC Overview. NANOG 54 Tutorial" Matt Larson! Vice President, DNS Research" Verisign Labs" Version: "
DNSSEC Overview NANOG 54 Tutorial" Matt Larson! Vice President, DNS Research" Verisign Labs" Version: 2012-02-05" DNS Security! DNS has no security One UDP packet for query, one UDP packet for response
DNSSEC Signing Experiences. Michael Sinatra, UC Berkeley Internet2 Member Meeting 3 November 2010
DNSSEC Signing Experiences Michael Sinatra, UC Berkeley Internet2 Member Meeting 3 November 2010 1 Why deploy DNSSEC? DNS has traditionally been an asecure protocol. More applications rely on security--from
The Performance of ECC Algorithms in DNSSEC: A Model-based Approach
Master Thesis The Performance of ECC Algorithms in DNSSEC: A Model-based Approach Faculty: Group: Electrical Engineering, Mathematics and Computer Science Design and Analysis of Communication Systems Author
Ordinary DNS: A? k.root-servers.net. com. NS a.gtld-servers.net a.gtld-servers.net A Client's Resolver
Ordinary DNS: www.google.com A? com. NS a.gtld-servers.net a.gtld-servers.net A 192.5.6.30 k.root-servers.net Ordinary DNS: www.google.com A? com. NS a.gtld-servers.net a.gtld-servers.net A 192.5.6.30
DNSCurve: Usable security for DNS
DNSCurve: Usable security for DNS D. J. Bernstein Research Professor Center for RITES: Research and Instruction in Technologies for Electronic Security Department of Computer Science University of Illinois
asyncdns Documentation
asyncdns Documentation Release 0.1.2 Alastair Houghton Nov 15, 2018 Contents 1 What is this? 3 2 Usage 5 2.1 Queries.................................................. 5 2.2 Replies..................................................
DNS security. Karst Koymans & Niels Sijm. Tuesday, September 18, Informatics Institute University of Amsterdam
DNS security Karst Koymans & Niels Sijm Informatics Institute University of Amsterdam Tuesday, September 18, 2012 Karst Koymans & Niels Sijm (UvA) DNS security Tuesday, September 18, 2012 1 / 38 1 Chain
DNSSEC for the Root Zone. IETF 76 Hiroshima November 2009
DNSSEC for the Root Zone IETF 76 Hiroshima November 2009 Jakob Schlyter Richard Lamb, ICANN Matt Larson, VeriSign 1 This design is the result of a cooperation between ICANN & VeriSign with support from
MAGPI: Advanced Services IPv6, Multicast, DNSSEC
MAGPI: Advanced Services IPv6, Multicast, DNSSEC Shumon Huque MAGPI GigaPoP & Univ. of Pennsylvania MAGPI Technical Meeting April 19th 2006, Philadelphia, PA 1 Outline A description of advanced services
Expires: June 16, 2004 VeriSign R. Austein ISC D. Massey USC/ISI S. Rose NIST December 17, 2003
DNS Extensions Internet-Draft Expires: June 16, 2004 R. Arends Telematica Instituut M. Larson VeriSign R. Austein ISC D. Massey USC/ISI S. Rose NIST December 17, 2003 Protocol Modifications for the DNS
Expires: November 15, 2004 VeriSign R. Austein ISC D. Massey USC/ISI S. Rose NIST May 17, 2004
DNS Extensions Internet-Draft Expires: November 15, 2004 R. Arends Telematica Instituut M. Larson VeriSign R. Austein ISC D. Massey USC/ISI S. Rose NIST May 17, 2004 Protocol Modifications for the DNS