Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Sign up for free
Menu
Search
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Pricing
Search
Sign in
Sign up for free
DNSSEC v2
Search
Andreas Pfohl
July 27, 2015
Technology
63
0
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
DNSSEC v2
My second talk about DNSSEC at the Netz39 hackerspace.
Andreas Pfohl
July 27, 2015
More Decks by Andreas Pfohl
See All by Andreas Pfohl
The Event Language
apfohl
0
580
Kore
apfohl
0
240
DNSSEC
apfohl
0
180
Domain Name System
apfohl
1
230
FreeBSD
apfohl
0
270
Other Decks in Technology
See All in Technology
SAENM ~Jupyterで残すPoCの試行錯誤、未来の自分と仲間を助ける記録!~
terapyon
0
110
NDIでApple Vision Proにリアルタイム映像送信
jyouryuusui
0
130
「Docker Desktop不要の時代」は 来たのか?
ueponx
0
810
S3 Filesで挑む! 八戸せんべい汁の食べ頃問題
usanchuu
0
110
オントロジーって 結局なにもの? AI エージェントに「意味」を渡す知識設計の話
greenmidori
0
230
Rustuna: Rustによる高速なOptuna実装
pfn
PRO
0
200
USB PDを使ってスマホを労わりたい
raspython3
0
180
AI時代のPRレビューにどう向き合うか?
kairim0
1
240
日本語に強いオープンな大規模言語モデル「LLM-jp」
odashi
5
1.1k
Benchmarking Disaggregated Serving on vLLM + Dynamo with a Real Coding-Agent Workload
nttcom
1
200
1つのリクエストを追って理解する - llm-dのP/D分離
akhino
1
160
Refining Active Record
shugo
0
160
Featured
See All Featured
ピンチをチャンスに:未来をつくるプロダクトロードマップ #pmconf2020
aki_iinuma
128
56k
Introduction to Domain-Driven Design and Collaborative software design
baasie
1
1k
Navigating Team Friction
lara
192
16k
Balancing Empowerment & Direction
lara
6
1.3k
Design in an AI World
tapps
1
350
Beyond borders and beyond the search box: How to win the global "messy middle" with AI-driven SEO
davidcarrasco
3
280
Efficient Content Optimization with Google Search Console & Apps Script
katarinadahlin
PRO
1
930
Navigating Weather and Climate Data
rabernat
0
560
Building Experiences: Design Systems, User Experience, and Full Site Editing
marktimemedia
1
630
Joys of Absence: A Defence of Solitary Play
codingconduct
1
550
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
254
22k
How People are Using Generative and Agentic AI to Supercharge Their Products, Projects, Services and Value Streams Today
helenjbeal
2
360
Transcript
DNSSEC von Andreas Pfohl
Überblick • Wiederholung DNS • Was ist DNSSEC? • Was
kann ich mit DNSSEC machen? • Was sind die Probleme von DNSSEC? • Was muss ich tun, um DNSSEC zu nutzen?
• Domain Name System • Namensauflösung • Zone Records DNS
Namensauflösung - DNS www.netz39.de. 78.46.22.20
Records - DNS netz39.de. A 78.46.22.20 netz39.de. MX 10 mail
netz39.de. NS ns1.domain… mail A 78.46.22.20 www CNAME @
DNSSEC • DNS Security Extensions • Authentizität • Integrität
Man in the Middle - DNSSEC Client Nameserver Provider netz39.de.?
netz39.de.? 78.46.22.20 17.142.160.59
Key Man in the Middle - DNSSEC Client Nameserver Provider
netz39.de.? netz39.de.? 78.46.22.20 + Signatur 17.142.160.59 + Signatur Key failed
Schlüssel - DNSSEC • Public Key Cryptography • Zone-Signing-Key •
Key-Signing-Key • Chain of Trust
Chain of Trust - DNSSEC . ZSK DS com. KSK
ZSK DS example.com. KSK ZSK Trust Anchor KSK KSK A
Anwendungen • Sicherer Verbindungsaufbau • Mail Exchange • SSH Fingerprints
• GnuPG Schlüssel • DANE
Mail - Anwendungen • MX Record • Mailserver gehört zur
Domain
SSH - Anwendungen • SSHFP Record • Korrekte SSH-Keys •
Überprüfung bei Verbindungsaufbau
GnuPG - Anwendungen • OPENPGPKEY Record • Public-Keys im DNS
• Domain-Verifizierung
DANE - Anwendungen • DNS-based Auth. of Named Entities •
TLSA Record • Fingerprints von Zertifikaten • Zertifikat gehört zu Server/Port
Probleme • Denial of Service Angriffe • DNS Amplification Attacks
• Zone Walking • Verifizierung
Probleme • Root-Key von USA verwaltet • Hohe Fehlerrate bei
Implementierung • Schwer zu verstehen • Alte Kryptographie
Voraussetzungen • Registrar unterstützt DNSSEC • Registrar trägt DS-Records ein
• Eigene Domain • Eigene Nameserver
OwnDNS.io • Eigene Experimentier-Domain •
[email protected]
• Besseres Verständnis des
DNS • Verbreitung von DNSSEC • Tutorials
Workshop • September 2015 • Eigener Nameserver • Eigene Domain
• DNSSEC
Danke E-Mail:
[email protected]
Twitter: @andreaspfohl