10-11-2016 дата публикации
Номер: US20160330174A1
Принадлежит:
A first DNS server receives, from a client device, a DNS query for a domain name and transmits, to a second DNS server, the DNS query for the domain name The first DNS server receives, from the second DNS server, an answer to the DNS query that is unsigned. The first DNS server signs the received answer to the DNS query and transmits, to the client device, the signed DNS answer. 1. A method in a first Domain Name System (DNS) server , comprising:receiving, from a client device, a DNS query for a domain name;transmitting, to a second DNS server, the DNS query for the domain name;receiving, from the second DNS server, an answer to the DNS query that is unsigned;signing the received answer to the DNS query; andtransmitting, to the client device, the signed DNS answer.2. The method of claim 1 , wherein the answer to the DNS query that is received from the second DNS server includes a resource record claim 1 , and wherein signing the received answer to the DNS query includes generating a resource record digital signature (RRSIG) record that includes a signature of the resource record.3. The method of claim 1 , further comprising:caching the signed DNS answer.4. The method of claim 1 , wherein signing the received answer to the DNS query includes using a private zone signing key (ZSK) managed by the first DNS server claim 1 , and wherein the first DNS server creates a DNSKEY record that includes a public ZSK.5. The method of claim 4 , wherein the DNSKEY record further includes a public key signing key (KSK) claim 4 , and further comprising signing the public ZSK and the public KSK of the DNSKEY record with a private key signing key (KSK).6. The method of claim 5 , wherein the first DNS server creates a delegate signer (DS) record from the public KSK.7. The method of claim 1 , wherein the first DNS server is a proxy DNS server and receives the DNS query as a result of a name server of the second DNS server being changed to point to the first DNS server.8. An apparatus ...
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