PolarDNS is a specialized authoritative DNS server that allows the operator to produce custom DNS responses suitable for DNS protocol testing purposes. What can you do with PolarDNS? PolarDNS can be used for testing of: DNS resolvers (server-side) DNS clients DNS libraries DNS parsers and dissectors Any software handling DNS information Some examples of DNS responses that PolarDNS can produce include: Alias (CNAME) chains and alias loops DNS header malformations (ID, Flags, number of sections) … More
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