Authors

Yevheniya Nosyk

Based in Grenoble, France

3

Articles

67

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About the author

I am a Ph.D. student at Université Grenoble Alpes (France), where I work on DNS and network security from large-scale Internet measurements point of view.

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Extended DNS Errors: Unlocking the Full Potential of DNS Troubleshooting

Extended DNS Errors: Unlocking the Full Potential of DNS Troubleshooting

7 min read

The Domain Name System (DNS) has traditionally relied on response codes to signal anomalies, but they are of little help to precisely identify the root causes behind failures. In this article, we examine the new Extended DNS Errors (EDE) mechanism that provides extra feedback on DNS resolutions.

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Intercept and Inject: DNS Response Manipulation in the Wild

Intercept and Inject: DNS Response Manipulation in the Wild

6 min read

In November 2021, Internet users from Mexico lost access to whatsapp.net and facebook.com. By the time the event was reported, the underlying problem had already gone unnoticed for quite some time. Here, we present key takeaways from our analysis of the event - carried out with RIPE Atlas - and we …

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Inferring the Deployment of Inbound Source Address Validation Using DNS Resolvers

Inferring the Deployment of Inbound Source Address Validation Using DNS Resolvers

6 min read

Source Address Validation (SAV) is the best current practice (BCP 38/RFC 2827) aimed at filtering packets based on source IP addresses at the network edge. In this article, we show how to identify networks that do not deploy SAV for incoming traffic.

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