The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2006
Filed:
Jun. 30, 1999
Applicant:
Steven Michael Bellovin, Westfield, NJ (US);
Inventor:
Steven Michael Bellovin, Westfield, NJ (US);
Assignee:
AT&T Corp., New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/00 (2006.01); G06F 15/173 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus for a implementing a distributed firewall is described. A packet filter processor receives a packet sent from a first device to a second device. The packet filter processor authenticates an identifier for the packet. For example, authentication could be performed using a cryptographically-verifiable identifier. The packet filter processor determines whether to send the packet to the second device, based on the authentication and a set of policy rules. The packet filter processor sends the packet to the second device in accordance with the determination.