Abstract: Embodiments are directed towards managing name service communications. A name service device may be arranged to employ a hardware domain name service (DNS) processor to receive a name service query. The hardware DNS processor may perform operations on the name service query. If operations performed by the hardware DNS processor do not resolve the name service query, further operations may be performed. The name service device may be arranged to provide a name service reply that includes the answer to the name service query. And, the name service device may be arranged to send the name service reply back to the hardware DNS processor. Accordingly, the hardware DNS processor on the name service device may send the name service reply that includes at least an answer to the name service query to the requesting computers.

Abstract: Embodiments are directed towards managing name service communications. A name service device may be arranged to employ a hardware domain name service (DNS) processor to receive a name service query. The hardware DNS processor may perform operations on the name service query. If operations performed by the hardware DNS processor do not resolve the name service query, further operations may be performed. The name service device may be arranged to provide a name service reply that includes the answer to the name service query. And, the name service device may be arranged to send the name service reply back to the hardware DNS processor. Accordingly, the hardware DNS processor on the name service device may send the name service reply that includes at least an answer to the name service query to the requesting computers.

Abstract: Embodiments are directed towards providing protection to DNS servers against DNS flood attacks by causing a requesting device to perform multiple DNS lookup requests for resolving a resource record. A request from a network device for a resolution of a domain name may be received by a device interposed between the requesting network device and a DNS server. Upon receiving the request to resolve the domain name, the interposed device may respond with a CNAME that includes a cookie. The requesting device may then send another request that includes the cookie preceded CNAME. The interposed device may then validate the returned cookie returned in the CNAME and if valid, forward the domain name resolution request on to a DNS server. The response may then be forwarded to the requesting device.

Abstract: Embodiments are directed towards providing protection to DNS servers against DNS flood attacks by causing a requesting device to perform multiple DNS lookup requests for resolving a resource record. A request from a network device for a resolution of a domain name may be received by a device interposed between the requesting network device and a DNS server. Upon receiving the request to resolve the domain name, the interposed device may respond with a CNAME that includes a cookie. The requesting device may then send another request that includes the cookie preceded CNAME. The interposed device may then validate the returned cookie returned in the CNAME and if valid, forward the domain name resolution request on to a DNS server. The response may then be forwarded to the requesting device.