Method for domain name system spoofing in local network system

Details Method for domain name system spoofing in local network system Method for domain name system spoofing in local network system

2003-04-21

2010-12-14

Burgess, Barbara N (Department: 2457)

Electrical computers and digital processing systems: multicomput

Computer-to-computer data addressing

C709S223000, C709S224000, C709S225000, C709S227000

Reexamination Certificate

active

07853720

ABSTRACT:
A method and system can access local network access devices whose IP (Internet Protocol) addresses are not registered to a DNS (Domain Name System) server using domain names. For this, a local network gateway registers the IP addresses and the domain names mapped to the IP addresses thereto. If a domain name contained in a received DNS query packet is registered to the local network gateway, the local network gateway changes a DNS query packet into a DNS answer packet containing an IP address corresponding to the registered domain name and then transmits the DNS answer packet to a local personal computer. Otherwise, the local network gateway passes the DNS query packet to an external network as it is.

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