Patent ID: 7907543
Filing Date: 2011-03-15
Classification: H04L

Abstract:
1. A network packet monitor for networks, such as the Internet, allowing intercommunication of data among computers by means of packets having numeric network destination addresses, the packet monitor comprising: a network tap for reading packets passing through a point on the network; a packet monitor communicating with the network tap to capture domain name server response packets responding to a domain name query in which a text domain name is converted into a numeric network address; a database communicating with the packet monitor, the database storing in association, at least one of a numeric network source address and a numeric network destination address, with a text domain name, all collected from the identified packets; and a packet characterizer communicating with the network monitor to identify other packets by matching at least one of a numeric network source address and numeric network destination address of the packets to associated text domain names in the database.