Sourcefire, Inc.

Andrew Baker

Martin Frederick Roesch

Ronald A Dempster

Eric Gustafson

William Andrew Vogel, Iii

A system includes a processor device. The processor device is configured to receive reports of operating system identities for a single host; determine which of the operating system identities are an intersection of the reported operating system identities; and assign the intersection of the reported operating system identities as a resolved operating system identity.

System and method for resolving operating system or service identity conflicts

A packet transmitted on a network is read and decoded. A network device and its operating system are identified by analyzing the decoded packet. If more than one operating system is identified from the decoded packet, the operating system is selecting by comparing confidence values assigned to the operating systems identified. A service running on the network device is identified from the decoded packet or subsequent packets that are read, decoded and analyzed. The network topology of a network is determined by reading, decoding, and analyzing a plurality of packets. A flow between two network devices is determined by reading, decoding, and analyzing a plurality of packets. Vulnerabilities are assigned to operating systems and services identified by reading, decoding, and analyzing packets. Network configuration policy is enforced on operating systems and services identified by reading, decoding, and analyzing packets.

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Columbia, MD, United States of America

Andrew Baker