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FlashStart Welcomes MSPs Migrating From OpenDNS With a Special Offer | Comunicados | Edición USA

FlashStart Welcomes MSPs Migrating From OpenDNS With a Special Offer | Comunicados | Edición USA
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How to change DNS settings on your PC running Windows 10

The idea of setting up a DNS can seem daunting. This guide will show you three methods to change the DNS settings on Windows 10 for more reliable and private resolvers.

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What s TsuNAME? DDoS attack vector threatens authoritative DNS servers

Researchers release open source tool to narrow down cyclic dependencies-related threat

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TsuNAME vulnerability could enable DDoS attacks on major DNS servers

Currently, most servers on the web are recursive, meaning they forward DNS queries from users to authoritative DNS servers that act as a phone book and return DNS responses for specific domain names. Under normal circumstances, millions of recursive DNS servers send billions of DNS queries to authoritative DNS servers every day. Large companies and organizations, like content delivery networks, tech giants, ISPs, domain registrars, and government agencies, typically run authoritative DNS server. The flaw affects DNS resolvers and can be exploited to attack authoritative servers. Resolvers vulnerable to the flaw will send nonstop queries to authoritative servers that have cyclic dependent records. Among the DNS resolvers known to be unaffected are Unbound, BIND, and KnotDNS.

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New TsuNAME Flaw Could Let Attackers Take Down Authoritative DNS Servers

New TsuNAME Flaw Could Let Attackers Take Down Authoritative DNS Servers Security researchers Thursday disclosed a new critical vulnerability affecting Domain Name System (DNS) resolvers that could be exploited by adversaries to carry out reflection-based denial-of-service attacks against authoritative nameservers. The flaw, called TsuNAME, was discovered by researchers from SIDN Labs and InternetNZ, which manage the national top-level internet domains .nl and .nz for the Netherlands and New Zealand, respectively. TsuNAME occurs when domain names are misconfigured with cyclic dependent DNS records, and when vulnerable resolvers access these misconfigurations, they begin looping and send DNS queries rapidly to authoritative servers and other resolvers, the researchers said.

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