Over 100,000 devices have a misconfigured service called multicast DNS that accepts requests from the Internet and can potentially be abused to amplify distributed denial-of-service (DDoS) attacks.
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Here's how I make sure mDNS works across my VLANs
When building my home lab, I chose to segregate the network devices into VLANs for easier management and administration. Everything worked until I realized I could access my printer, Apple TV, HomePod ...
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