Name Challenge Enabled Zones
First Claim
Patent Images
1. A method comprising:
- receiving an update at a domain name system (DNS) server from a first client device, the update including a host name;
determining whether the DNS server hosts an authoritative zone for the update;
determining whether there is already a record for the host name; and
if so,determining an Internet Protocol (IP) address associated with the host name;
determining whether the IP address associated with the host name matches a source IP address of the first client device; and
accepting the update if the IP addresses match.
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Abstract
A method and system for implementing name challenge enabled zones is described herein. A DNS server receives an update from a client device. If the DNS server hosts an authoritative zone for the update, the DNS server determines whether there is a record for the host name. If so, then the IP address associated with the host name is determined. The IP address is compared to the source address of the client device sending the update. If the IP addresses match, then the update is accepted.
47 Citations
20 Claims
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1. A method comprising:
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receiving an update at a domain name system (DNS) server from a first client device, the update including a host name; determining whether the DNS server hosts an authoritative zone for the update; determining whether there is already a record for the host name; and
if so,determining an Internet Protocol (IP) address associated with the host name; determining whether the IP address associated with the host name matches a source IP address of the first client device; and accepting the update if the IP addresses match. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. One or more device-readable media with device-executable instructions for performing steps comprising:
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receiving an update from a first client device at a domain name system (DNS) server that hosts an authoritative zone for the update, the update including a host name; checking one or more records in the zone to determine whether there is already a record for the host name, and if so, checking the record for the host name to determine an Internet Protocol (IP) address associated with the host name; determining whether the IP address associated with the host name matches a source IP address of the first client device, and if not, sending a DNS query to a second client device having the IP address associated with the host name; and determining whether to accept the update based on whether the second client device responds to the DNS query. - View Dependent Claims (14, 15, 16)
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17. A method comprising:
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receiving an update from a first client device at a domain name system (DNS) server, the update including a host name; determining whether there is already a record for the host name; and
if so,determining a source IP address of a registrant of the host name; determining whether the source IP address of the registrant of the host name matches the first client device'"'"'s source IP address, and if not, sending a DNS query to the registrant of the host name; and rejecting the update if an acknowledgement is received from the registrant in response to the DNS query. - View Dependent Claims (18, 19, 20)
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Specification