DNSSEC - Domain Name System Security ExtensionsPeter R. Egli
Overview of DNSSEC protocol.
DNS is a pivotal infrastructure in TCP/IP based networks. An outage of the DNS system would bring entire networks to a grinding halt.
When DNS was devised in the early days of the Internet, security had no importance. Therefore, DNS is entirely unsecured which means it offers countless attack vectors to hack and crack a network.
Common attacks are DNS cache poisoning, i.e. adding false entries in DNS databases thus diverting the unsuspecting user to a malicious server and man in the middle attacks.
To secure DNS, an extension was defined in the form of DNSSEC. It uses state-of-the-art security algorithms to authenticate and digitally sign requests and responses so that a DNS resolver is able to verify legitimate DNS responses.
The adoption rate of DNSSEC is still slow, but is gradually picking up speed.
Learn about the essentials of the Domain Name System (DNS), including name resolution, different record types, roots, zones, authority and recursion.
See the full webinar and the rest of the series at https://www.thousandeyes.com/resources/intro-to-dns-webinar
In order to protect privacy, many technologies are used for various purposes. This slide is an introductory overview of these technologies for each purpose, including private information retrieval, secure computation, pseudonymization, anonymization and differential privacy.
Secure Shell (SSH) is a cryptographic network protocol for operating network services securely over an unsecured network. This presentation is made as an assignment during our university course.
DNSSEC - Domain Name System Security ExtensionsPeter R. Egli
Overview of DNSSEC protocol.
DNS is a pivotal infrastructure in TCP/IP based networks. An outage of the DNS system would bring entire networks to a grinding halt.
When DNS was devised in the early days of the Internet, security had no importance. Therefore, DNS is entirely unsecured which means it offers countless attack vectors to hack and crack a network.
Common attacks are DNS cache poisoning, i.e. adding false entries in DNS databases thus diverting the unsuspecting user to a malicious server and man in the middle attacks.
To secure DNS, an extension was defined in the form of DNSSEC. It uses state-of-the-art security algorithms to authenticate and digitally sign requests and responses so that a DNS resolver is able to verify legitimate DNS responses.
The adoption rate of DNSSEC is still slow, but is gradually picking up speed.
Learn about the essentials of the Domain Name System (DNS), including name resolution, different record types, roots, zones, authority and recursion.
See the full webinar and the rest of the series at https://www.thousandeyes.com/resources/intro-to-dns-webinar
In order to protect privacy, many technologies are used for various purposes. This slide is an introductory overview of these technologies for each purpose, including private information retrieval, secure computation, pseudonymization, anonymization and differential privacy.
Secure Shell (SSH) is a cryptographic network protocol for operating network services securely over an unsecured network. This presentation is made as an assignment during our university course.
A complete Coverage of DNS and its features. This ppt deals with well balanced practical and theoretical aspects of DNS. The best ppt for a novice learner.
Remote Authentication Dial In User Service is a networking protocol that provides centralized Authentication, Authorization, and Accounting (AAA) management for computers to connect and use a network service.
Short overview of AAA and the RADIUS protocol.
The term AAA (say triple A) subsumes the functions used in network access to allow a user or a computer to access a network and use its resources.
AAA stands for Authentication (is the user authentic?), Authorization (what is the user allowed to do?) and Accounting (track resource usage by the user).
AAA is typically employed at network ingress points to control user's access to the network and resources.
The most prominent protocol for AAA is RADIUS (Remote Authentication Dial In User Service) which defines messages for opening and closing a network session and counting network usage (packet and byte count).
RADIUS usually works in conjunction with an LDAP server that stores the policies and user authorizations in a central repository.
Talk given at OSDC 2016 about Foreman and managing a lab. This is a feedback of our 3 years experience with the Foreman and emphasis Foreman and Puppet, Libvirt cooperation.
A complete Coverage of DNS and its features. This ppt deals with well balanced practical and theoretical aspects of DNS. The best ppt for a novice learner.
Remote Authentication Dial In User Service is a networking protocol that provides centralized Authentication, Authorization, and Accounting (AAA) management for computers to connect and use a network service.
Short overview of AAA and the RADIUS protocol.
The term AAA (say triple A) subsumes the functions used in network access to allow a user or a computer to access a network and use its resources.
AAA stands for Authentication (is the user authentic?), Authorization (what is the user allowed to do?) and Accounting (track resource usage by the user).
AAA is typically employed at network ingress points to control user's access to the network and resources.
The most prominent protocol for AAA is RADIUS (Remote Authentication Dial In User Service) which defines messages for opening and closing a network session and counting network usage (packet and byte count).
RADIUS usually works in conjunction with an LDAP server that stores the policies and user authorizations in a central repository.
Talk given at OSDC 2016 about Foreman and managing a lab. This is a feedback of our 3 years experience with the Foreman and emphasis Foreman and Puppet, Libvirt cooperation.
Fighting against DDoS specially with volumetric attack is always challenging for an ISP or transit provider. There isn't any single solution which help us to filter out bad traffic; it's require collaboration with upstream and related organization. Beside this fining out the target is also time consuming; where most the the provider struggles. In this presentation I talk about my experience implementing few community based effort which help me to better fight against volumetric DDoS attack.
Keeping DNS server up-and-running with “runitMen and Mice
A traditional Unix/Linux init system like SystemV-Init or BSD rc does start a DNS server process on server boot, but it does not restart the service in case of an abnormal termination. Modern init replacements like systemd provide process supervision, but bring extra complexities and possible stability and security issues.
This webinar demonstrates an alternative, open source process supervision system called “runit”.
“runit” is lean and fast and sticks to the Unix tradition to do one thing, and do that right.
In this webinar you will learn how to manage DNS server processes such as BIND 9, Unbound and NSD from runit.
In this installment of the Men & Mice webinar series, Mr. Carsten Strotmann will talk about the role that DNS plays in fighting malware and spam.
The discussion will dig into DNS blacklists, domain reputation, Response Policy Zones and how the new TLDs have changed the game.
DNS High-Availability Tools - Open-Source Load Balancing SolutionsMen and Mice
The DNS protocol has built-in high availability for authoritative DNS servers (this will be better explained in the webinar!), but client machines can see a degraded DNS service if a DNS resolver (caching DNS server) is failing.
In this webinar, we will look into how the DNS clients in popular operating systems (Windows, Linux, macOS/iOS) choose the DNS resolver among a list of available servers, and how a DNS resolver service can be made failure-tolerant with open-source solutions such as “dnsdist” from PowerDNS and “relayd” from OpenBSD.
It goes without saying that DNS is only as secure as its servers. To ensure the successful and secure operation of a DNS server, secure configuration is paramount.
The new BIND 9 version 9.11 is a major version of the popular DNS server, released in August by ISC.
In this webinar Mr. Carsten Strotmann will demonstrate new features such as:
- Catalog Zones,
- dnssec-keymgr, new *rndc* functions
- CDS/CDNSKEY auto generation
- Negative Trust Anchor
- DNS cookies
-Refuse “any”
-and more.
Logging is important for troubleshooting a DNS service. Conveniently with BIND 9, almost all problems will show up somewhere in the log output, but only if the logging is enabled and configured correctly.
In this webinar, we’ll discuss the BIND 9 logging configuration and best practices in searching through large log-files to find the entries of interest. In addition, we’ll release log-management tools used by Men & Mice Services.
Who are you really calling? When we we use VoIP systems, how can we be sure we are talking to the correct people? Particularly as we increasingly move communications to IP? In this presentation at SIPNOC 2013, Dan York introduced the ideas around DNSSEC and DANE and asked questions around how these might potentially be used to add an additionally layer of security for VoIP.
For more info, see:
http://www.internetsociety.org/deploy360/dnssec/
A talk about TCP, UDP, IP, DNS, ISP, GET, URI, URN, URL, SSL, TLS, TTFB, HTTP/2, HTML and DOM, or, in translation, a talk about the internet, how requests travel through the network and how browsers handle the response.
This has been originally presented during BrightonSEO - Summer 2021.
Is DNS a Part of Your Cyber Security Strategy?
Detecting malware, helping to prevent and disrupt command and control communication, ransomware and phishing attacks, being part of a data loss prevention program– DNS can help with this and much more, but are you leveraging it as part of your security controls and processes? DNS is the perfect choke point to stop not just data exfiltration through it, but also detect and stop malware from spreading and executing.
In this session, you'll learn:
The value of DNS as part of your cyber strategy
How DNS can provide your SIEM with actionable intelligence
How DNS can add value to other security controls, such as vulnerability scanners and end point protection
Join Infoblox for a discussion on this often overlooked topic.
Modern systems in production rely on decades of computer science research. Over time, new architectural patterns emerge that enable more resilient and robust systems. In this talk, we'll discuss some of these patterns from systems I've worked on at Google and the related work that provide insights into the motivations behind them.
A contemporary network service heavily depends on domain name system operating normally. Yet, often issues and caveats of typical DNS setup are being overlooked. DNS (like BGP before) is expected to "just work" everywhere, however, just as BGP, this is a complex protocol and a complex solution where a lot of things could go wrong in multiple ways under different circumstances. This talk is supposed to provide some assistance both in maintaining your own DNS infrastructure and in relying on service providers doing this.
Lately, several backdoors in cryptographic constructions, protocols and implementations have been surfacing in the wild: Dual-EC in RSA's B-Safe product, a modified Dual-EC in Juniper's operating system ScreenOS and a non-prime modulus in the open-source tool socat. Many papers have already discussed the fragility of cryptographic constructions not using nothing-up-my-sleeve numbers, as well as how such numbers can be safely picked. However, the question of how to introduce a backdoor in an already secure, safe and easy to audit implementation has so far rarely been researched (in the public). We present two ways of building a Nobody-But-Us (NOBUS) Diffie-Hellman backdoor: a composite modulus with a hidden subgroup (CMHS) and a composite modulus with a smooth order (CMSO). We then explain how we were able to subtly implement and exploit it in a local copy of an open source library using the TLS protocol.
2nd ICANN APAC-TWNIC Engagement Forum: DNS OblivionAPNIC
APNIC Chief Scientist Geoff Huston gives an overview of the complex many-layered model of DNS security, and a new emerging world of choices for protecting traffic, hiding queries, and the future trends in ISP provided, and independent third-party DNS services at the 2nd ICANN APAC-TWNIC Engagement Forum, held from 15 to 16 April 2021.
MITRE ATT&CKcon 2018: Playing Devil’s Advocate to Security Initiatives with A...MITRE - ATT&CKcon
This talk presents a case study which demonstrates that we should consider the knowledge and wisdom contained within ATT&CK in all organizational security initiatives to make sure by fixing one thing we have not just created an opportunity.
The presentation shows how to leverage the analysis and classification of APT tactics and procedures (TTP) to guide research into new and novel techniques, specifically focusing on exfiltration and command and control.
DNS over HTTPS (DoH) aims to increase user privacy and security by preventing eavesdropping and manipulation of DNS data by man-in-the-middle attacks. Major web browsers such as Firefox are considering its implementation by default. But what could this possibly mean for exfiltration and command and control?
This session provides an end-to-end demo that shows DoH being implemented to provide full command and control in a popular attack simulation framework and discusses associated mitigations.
What's New in Prometheus and Its EcosystemJulien Pivotto
Let's have a look at all the recent features and changes in the Prometheus server and the community. We will introduce the new features and see how you can integrate them in your workflows to get a better Prometheus experience.
Prometheus: What is is, what is new, what is comingJulien Pivotto
Prometheus is a metrics-based monitoring and alerting system and also the project with the second longest tenure within the CNCF. As such you have probably heard about it by now. We will give you a short introduction to Prometheus, what it is and why it was such a big deal when it was initially released. In all those years since then, the project has only gained speed, which provides us with the opportunity to tell you about all the exciting new features that have just been released or are in the pipeline, including opportunities to contribute to the project and its wider ecosystem.
Talk at kubecon 2021
Monitoring in a fast-changing world with PrometheusJulien Pivotto
Prometheus is an open source monitoring project used to gather metrics.
It as many capabilities built-in, such as service discovery, which makes it very suitable for an automated environment.
This talk will give a brief introduction of Prometheus, what are the latest developments, and then give practical tips and examples about how you can use it in an automated world.
Graphs can represent many different things. Across the years I have learned how to display different situations in Grafana effectively. I share how to visualize different kinds of situations and make them easy to read by using advanced features of Grafana.
HAProxy is often used to route ingress traffic, but we use it the other way around. We use it for egress. Our applications talk to the outside world through HAProxy. We get a lot of benefits from this unique approach: throttling, guaranteed response times, unified monitoring, and path rewriting. I will highlight how we use HAProxy at Inuits and how we achieve observability via Prometheus and Grafana.
Improved alerting with Prometheus and AlertmanagerJulien Pivotto
One of the reasons we collect metrics is to be able to alert on them. This presentation will introduce you some concepts of PromQL, prometheus and alertmanager to highly improve the quality and reliability of your alerts. This talk will cover different topic, including: - Reducing flapping alerts - Hysteresis - "Time of the day" based alerting - Computed thresholds with data history
Monitoring as an entry point for collaborationJulien Pivotto
In the last years, we have been building complex stacks, made from lots of components. All of this backed by multiple teams. This talk will present how you can use monitoring to look at the business side and have everyone looking at the same dashboards, making cooperation a reality.
his talk will introduce you to the Prometheus monitoring solution and how you can use it to monitor yous CentOS servers, and the applications that run on top of them. It will provide tips about the setup and show some great, real life example.
A small demo involving OpenShift will also be produced, to demonstrate how Prometheus can work with dynamic environments.
Automation is at the heart of modern infrastructure. Ansible is a great tool to automate your routing workflows and your infrastructure.
This talk will present you the best of Ansible - how you can quickly get started and start automating your infrastructure with it.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Essentials of Automations: Optimizing FME Workflows with Parameters
DNSSec
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RMLL Security Track
July 5th, 2016
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• Sysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.euSysadmin at inuits.eu
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• Automation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & MonitoringAutomation & Monitoring
• @roidelapluie@roidelapluie@roidelapluie@roidelapluie@roidelapluie@roidelapluie@roidelapluie@roidelapluie@roidelapluie@roidelapluie@roidelapluie@roidelapluie@roidelapluie@roidelapluie@roidelapluie@roidelapluie@roidelapluie on irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/githubon irc/twitter/github
5. What is DNS?What is DNS?What is DNS?What is DNS?What is DNS?What is DNS?What is DNS?What is DNS?What is DNS?What is DNS?What is DNS?What is DNS?What is DNS?What is DNS?What is DNS?What is DNS?What is DNS?
• TTTTTTTTTTTTTTTTTL;DR Translates domain name to IP
• IIIIIIIIIIIIIIIIIn facto, stores much more data than IP
6. How it worksHow it worksHow it worksHow it worksHow it worksHow it worksHow it worksHow it worksHow it worksHow it worksHow it worksHow it worksHow it worksHow it worksHow it worksHow it worksHow it works
Licensed under a Creative Commons Attribution-ShareAlike 2.0 License
https://www.flickr.com/photos/frans16611/6139595092
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Inspired by @jpmens - Icons by http://jcartier.net/spip.php?aticle39
8. Licensed under a Creative Commons Attribution-ShareAlike 2.0 License
Inspired by @jpmens - Icons by http://jcartier.net/spip.php?aticle39
9. Licensed under a Creative Commons Attribution-ShareAlike 2.0 License
Inspired by @jpmens - Icons by http://jcartier.net/spip.php?aticle39
10. Licensed under a Creative Commons Attribution-ShareAlike 2.0 License
Inspired by @jpmens - Icons by http://jcartier.net/spip.php?aticle39
11. Licensed under a Creative Commons Attribution-ShareAlike 2.0 License
Inspired by @jpmens - Icons by http://jcartier.net/spip.php?aticle39
12. DNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-criticalDNS is mission-critical
• HHHHHHHHHHHHHHHHHolds IP addresses
• HHHHHHHHHHHHHHHHHolds service definitions
• HHHHHHHHHHHHHHHHHolds hostnames, TXT records
13. DNS practicesDNS practicesDNS practicesDNS practicesDNS practicesDNS practicesDNS practicesDNS practicesDNS practicesDNS practicesDNS practicesDNS practicesDNS practicesDNS practicesDNS practicesDNS practicesDNS practices
• DDDDDDDDDDDDDDDDDo not mix Authoritative and Recursive
servers
• MMMMMMMMMMMMMMMMMix your DNS server `brand'
• HHHHHHHHHHHHHHHHHide your DNS masters
• DDDDDDDDDDDDDDDDDo not invent new TLD
14. Data stored in DNSData stored in DNSData stored in DNSData stored in DNSData stored in DNSData stored in DNSData stored in DNSData stored in DNSData stored in DNSData stored in DNSData stored in DNSData stored in DNSData stored in DNSData stored in DNSData stored in DNSData stored in DNSData stored in DNS
• AAAAAAAAAAAAAAAAA records: IP addresses
• CCCCCCCCCCCCCCCCCNAME: Cannonical names
• SSSSSSSSSSSSSSSSSRV: Service record
• MMMMMMMMMMMMMMMMMX: Mail servers
• TTTTTTTTTTTTTTTTTXT: Text record
17. Not secure by designNot secure by designNot secure by designNot secure by designNot secure by designNot secure by designNot secure by designNot secure by designNot secure by designNot secure by designNot secure by designNot secure by designNot secure by designNot secure by designNot secure by designNot secure by designNot secure by design
• 11111111111111111983
• DDDDDDDDDDDDDDDDDesigned for scale, not security
• EEEEEEEEEEEEEEEEEarly 2000: birth of DNSSec
19. The Domain Name System Security
Extensions (DNSSEC) add data origin
authentication and data integrity to the
Domain Name System.
RFC 4033
20. What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?What is DNS Sec?
• PPPPPPPPPPPPPPPPProof of origin and integrity
• ZZZZZZZZZZZZZZZZZones and records signing
• PPPPPPPPPPPPPPPPProof of non-existence
21. Two types of keysTwo types of keysTwo types of keysTwo types of keysTwo types of keysTwo types of keysTwo types of keysTwo types of keysTwo types of keysTwo types of keysTwo types of keysTwo types of keysTwo types of keysTwo types of keysTwo types of keysTwo types of keysTwo types of keys
• ZZZZZZZZZZZZZZZZZSK: Zone Signing Key
• KKKKKKKKKKKKKKKKKSK: Key Signing Key
22. Zone Signing keyZone Signing keyZone Signing keyZone Signing keyZone Signing keyZone Signing keyZone Signing keyZone Signing keyZone Signing keyZone Signing keyZone Signing keyZone Signing keyZone Signing keyZone Signing keyZone Signing keyZone Signing keyZone Signing key
• PPPPPPPPPPPPPPPPPrivate/Public key pair
• SSSSSSSSSSSSSSSSSign the Records
• eeeeeeeeeeeeeeeee.g sign the A records, the MX records …
• RRRRRRRRRRRRRRRRRolled out frequently
23. Key Signing KeyKey Signing KeyKey Signing KeyKey Signing KeyKey Signing KeyKey Signing KeyKey Signing KeyKey Signing KeyKey Signing KeyKey Signing KeyKey Signing KeyKey Signing KeyKey Signing KeyKey Signing KeyKey Signing KeyKey Signing KeyKey Signing Key
• PPPPPPPPPPPPPPPPPrivate/Public key pair
• SSSSSSSSSSSSSSSSSign the ZSK
• DDDDDDDDDDDDDDDDDesigned to be stronger than the ZSK
• IIIIIIIIIIIIIIIIIts fingerprint is stored in parent zone
24. DNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records types
• RRRRRRRRRRRRRRRRRRSIG: Signature
• DDDDDDDDDDDDDDDDDNSKEY: Public key
• DDDDDDDDDDDDDDDDDS: Hash of a DNSKEY (parent zone)
25. DNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records typesDNS Records types
• NNNNNNNNNNNNNNNNNSEC: Next secure
• RRRRRRRRRRRRRRRRReturns the next secure entry
• RRRRRRRRRRRRRRRRReturned when next secure is not found
• NNNNNNNNNNNNNNNNNSEC/NSEC3 records are signed
• NNNNNNNNNNNNNNNNNSEC3 prevents zone walking
26. In PracticeIn PracticeIn PracticeIn PracticeIn PracticeIn PracticeIn PracticeIn PracticeIn PracticeIn PracticeIn PracticeIn PracticeIn PracticeIn PracticeIn PracticeIn PracticeIn Practice
29. Bind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSecBind and DNSSec
• FFFFFFFFFFFFFFFFFull support + NSEC3
• MMMMMMMMMMMMMMMMManual signing
• AAAAAAAAAAAAAAAAAutomated signing
• DDDDDDDDDDDDDDDDDNSSec and dynamic zones
33. Enable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bindEnable DNSSec in bind
options {
dnssec−enable yes;
dnssec−validation yes;
}
34. Enable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zone
Manually signedManually signedManually signedManually signedManually signedManually signedManually signedManually signedManually signedManually signedManually signedManually signedManually signedManually signedManually signedManually signedManually signed
zone "rmll.example" IN {
type master;
file "rmll.example.zone.signed";
};
35. Enable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zoneEnable DNSSec for a zone
Auto SigningAuto SigningAuto SigningAuto SigningAuto SigningAuto SigningAuto SigningAuto SigningAuto SigningAuto SigningAuto SigningAuto SigningAuto SigningAuto SigningAuto SigningAuto SigningAuto Signing
zone "rmll.example" IN {
type master;
file "rmll.example.zone";
key−directory "/etc/bind/keys";
auto−dnssec maintain;
inline−signing yes;
};
36. Manually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zoneManually Sign a zone
dnssec−signzone −S −o rmll.example −K /etc
/bind/keys/ /var/bind/master/rmll.
example.zone
• Creates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone fileCreates a .signed zone file
39. TLSA recordsTLSA recordsTLSA recordsTLSA recordsTLSA recordsTLSA recordsTLSA recordsTLSA recordsTLSA recordsTLSA recordsTLSA recordsTLSA recordsTLSA recordsTLSA recordsTLSA recordsTLSA recordsTLSA records
• HHHHHHHHHHHHHHHHHash the fingerprint of a TLS key
• """""""""""""""""Replacement" for the CA (https)
• NNNNNNNNNNNNNNNNNot implemented natively in browsers
• IIIIIIIIIIIIIIIIImplemented in IRC clients (irssi)
41. Generating a hashGenerating a hashGenerating a hashGenerating a hashGenerating a hashGenerating a hashGenerating a hashGenerating a hashGenerating a hashGenerating a hashGenerating a hashGenerating a hashGenerating a hashGenerating a hashGenerating a hashGenerating a hashGenerating a hash
openssl x509 −in cert.pem −outform DER |
openssl sha256
44. SSHFP recordsSSHFP recordsSSHFP recordsSSHFP recordsSSHFP recordsSSHFP recordsSSHFP recordsSSHFP recordsSSHFP recordsSSHFP recordsSSHFP recordsSSHFP recordsSSHFP recordsSSHFP recordsSSHFP recordsSSHFP recordsSSHFP records
• HHHHHHHHHHHHHHHHHash the fingerprint of a SSH server
• IIIIIIIIIIIIIIIIImplemented in OpenSSH
• UUUUUUUUUUUUUUUUUses DNS to recognize SSH key
45. IN SSHFP 1 1
e0fd9112d2fc6974597fe8968665ad6b420c
IN SSHFP 1 2 9
de5bc066a898733420bcfaae8f43e80e532
IN SSHFP 2 1 223
e89447a53a3178be02fee6fdd5b44228a
IN SSHFP 2 2 2644
fcbd2a1b179091a195207e395d009b16
47. $ ssh −o VerifyHostKeyDNS=yes rmll.example
The authenticity of host 'rmll.example
(1.2.3.4)' can't be established.
ECDSA key fingerprint is SHA256:
f8zwQD3RU62PXgwCw5WRk2OIyVY.
Matching host key fingerprint found in DNS
Are you sure you want to continue?
48. Populating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fieldsPopulating SSHFP fields
• WWWWWWWWWWWWWWWWWhat if we have a single source of truth?
• SSSSSSSSSSSSSSSSSomething that can scale, and be quick
enough?
49. Config ManagementConfig ManagementConfig ManagementConfig ManagementConfig ManagementConfig ManagementConfig ManagementConfig ManagementConfig ManagementConfig ManagementConfig ManagementConfig ManagementConfig ManagementConfig ManagementConfig ManagementConfig ManagementConfig Management
• QQQQQQQQQQQQQQQQQuickly moving env often use Cfgmgmt
Tools
• TTTTTTTTTTTTTTTTThey know the env, store data
• WWWWWWWWWWWWWWWWWe use Puppet+The foreman
61. Foreman ProxiesForeman ProxiesForeman ProxiesForeman ProxiesForeman ProxiesForeman ProxiesForeman ProxiesForeman ProxiesForeman ProxiesForeman ProxiesForeman ProxiesForeman ProxiesForeman ProxiesForeman ProxiesForeman ProxiesForeman ProxiesForeman Proxies
• FFFFFFFFFFFFFFFFForeman works with a GUI + Proxies
• DDDDDDDDDDDDDDDDDHCP proxy, Puppet Proxy, DNS proxy…
• DDDDDDDDDDDDDDDDDNS Proxy is pluggable: bind9, powerdns…
62. Foreman is greatForeman is greatForeman is greatForeman is greatForeman is greatForeman is greatForeman is greatForeman is greatForeman is greatForeman is greatForeman is greatForeman is greatForeman is greatForeman is greatForeman is greatForeman is greatForeman is great
• OOOOOOOOOOOOOOOOOpen Source
• BBBBBBBBBBBBBBBBBacked by Red Hat
• TTTTTTTTTTTTTTTTThe main brick behind Red Hat Satellite 6
• PPPPPPPPPPPPPPPPProvides a REST API
63. Building a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) hostBuilding a (libvirt) host
• CCCCCCCCCCCCCCCCCreate/update DNS entries
• CCCCCCCCCCCCCCCCCreate/update DHCP entries
• CCCCCCCCCCCCCCCCCreate the VM in libvirt
• BBBBBBBBBBBBBBBBBoot the VM
• SSSSSSSSSSSSSSSSServe a kickstart
• RRRRRRRRRRRRRRRRRun Puppet
64. The Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxyThe Foreman - Puppet proxy
• PPPPPPPPPPPPPPPPPuppet Collects and save Facts on the
machines
• IIIIIIIIIIIIIIIIIt can send it back to the Foreman
• FFFFFFFFFFFFFFFFForeman can graph them, query them…
67. DNS rocksDNS rocksDNS rocksDNS rocksDNS rocksDNS rocksDNS rocksDNS rocksDNS rocksDNS rocksDNS rocksDNS rocksDNS rocksDNS rocksDNS rocksDNS rocksDNS rocks
• NNNNNNNNNNNNNNNNNeeded everywhere
• DDDDDDDDDDDDDDDDDistributed
• CCCCCCCCCCCCCCCCContains lots of data
• MMMMMMMMMMMMMMMMMakes our life easier
68. DNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implementDNSSec is easy to implement
• AAAAAAAAAAAAAAAAAutomation is key
• IIIIIIIIIIIIIIIIImplemented in most of the tools
• AAAAAAAAAAAAAAAAAnd most of the DNS servers
69. DANE adds more securityDANE adds more securityDANE adds more securityDANE adds more securityDANE adds more securityDANE adds more securityDANE adds more securityDANE adds more securityDANE adds more securityDANE adds more securityDANE adds more securityDANE adds more securityDANE adds more securityDANE adds more securityDANE adds more securityDANE adds more securityDANE adds more security
• SSSSSSSSSSSSSSSSSSH fingerprint
• IIIIIIIIIIIIIIIIIRC, SMTP certificates hashes
• EEEEEEEEEEEEEEEEExisting client-side implementations