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Is DNSSEC useful?
DNSSEC strengthens authentication in DNS using digital signatures based on public key cryptography. With DNSSEC , it’s not DNS queries and responses themselves that are cryptographically signed, but rather DNS data itself is signed by the owner of the data. Every DNS zone has a public/private key pair.
How widely deployed is DNSSEC?
While more than 90% of the TLDs in DNS are DNSEC enabled, DNSSEC is still not widely deployed or used. To make matter worse, where it is deployed, it isn’t well deployed. If 30% of the keys returned in DNS are compromised, for instance, most users would probably stop trusting any DNSSEC signed information.
Why is it important to use DNSSEC in internal domain?
Because internal domain zones often provide support for additional services that are not implemented by public DNS zones, it is even more important to appropriately manage your DNSSEC deployment when you sign these types of zones.
Is it better to sign a DNS zone with DNSSEC?
A DNS zone that is signed with DNSSEC is more secure, but is also associated with more administrative tasks. Before you sign a zone with DNSSEC, consider both the potential advantages and disadvantages.
How are DNS queries and responses signed in DNSSEC?
With DNSSEC, it’s not DNS queries and responses themselves that are cryptographically signed, but rather DNS data itself is signed by the owner of the data. Every DNS zone has a public/private key pair. The zone owner uses the zone’s private key to sign DNS data in the zone and generate digital signatures over that data.
Where is the DNSSEC key stored in RRSIG?
DNS resolvers verify the signature with a public key, stored in a DNSKEY record. DNSKEY: Contains the public key that a DNS resolver uses to verify DNSSEC signatures in RRSIG records. DS (delegation signer): Holds the name of a delegated zone and references a DNSKEY record in the sub-delegated zone.