Method and apparatus for redirection of domain name service (DNS) packets
View Patent ↗Techniques are provided which can allow a host to determine whether to send a DNS request via a distributed Domain Name Service (DNS) protocol or a regular DNS protocol.
1. A method of redirecting a Domain Name Server (DNS) request packet generated by an application, the method comprising:
reading an Internet Protocol (IP) address of an infrastructure-based Domain Name Server that is initially stored in the operating system of a client node at start up;
replacing the IP address of the infrastructure-based Domain Name Server with an IP address of the client node such that the operating system interprets the infrastructure-based Domain Name Server as being located at the IP address of the client node;
running a second application at a Transport Layer Protocol (TLP) port which listens for packets addressed to the Transport Layer Protocol (TLP) port designated for Domain Name System Servers;
generating, at the application in the client node, the DNS request packet based on a requested domain name;
redirecting the DNS request packet to the IP address of the client node;
determining, by the second application, whether to forward the DNS request packet either to the infrastructure-based Domain Name Server or at least one other node in an autonomous ad hoc network based at least in part on a network identifier associated with the requested domain name; and
forwarding the DNS request packet to either the infrastructure-based Domain Name Server or the autonomous ad hoc network.
2. A method according to claim 1 , further comprising:
storing the IP address of the infrastructure-based Domain Name Server for later use.
3. A node, comprising:
an application configured to generate a Domain Name Server (DNS) request packet based on a requested domain name;
an operating system initially configured to store an Internet Protocol (IP) address of an infrastructure-based Domain Name Server; and
a first module configured to:
read an Internet Protocol (IP) address of an infrastructure-based Domain Name Server that is initially stored in the operating system of a client node at start up; and
replace the IP address of the infrastructure-based Domain Name Server with an IP address of the client node such that the operating system interprets the infrastructure-based Domain Name Server as being located at the IP address of the client node;
a second application running at a Transport Layer Protocol (TLP) port configured to listen for packets addressed to the Transport Layer Protocol (TLP) port designated for Domain Name System Servers;
the application further configured to generate the DNS request packet based on the requested domain name;
the operating system further configured to redirect the DNS request packet to the IP address of the client node;
the second application further configured to determine whether to forward the DNS request packet either to the infrastructure-based Domain Name Server or at least one other node in an autonomous ad hoc network based at least in part on a network identifier associated with the requested domain name; and
a transceiver configured to forward the DNS request packet to either the infrastructure-based Domain Name Server or the autonomous ad hoc network.
4. A node according to claim 3 , wherein the first module is configured to store the IP address of the infrastructure-based Domain Name Server for later use.