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:
Apr. 10, 2012
Filed:
Jan. 04, 2007
Dan Touitou, Ramat Gan, IL;
Darrel Lewis, San Francisco, CA (US);
Rafi Tzadikario, Kfar Saba, IL;
Karen Horowitz, Hod Hasharon, IL;
Dan Touitou, Ramat Gan, IL;
Darrel Lewis, San Francisco, CA (US);
Rafi Tzadikario, Kfar Saba, IL;
Karen Horowitz, Hod Hasharon, IL;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method includes monitoring outgoing request packets transmitted by a node in a protected network over a link connecting the protected network to an external network. Incoming response packets that originate in the external network and are destined for transmission to the node are also monitored. One or more of the incoming response packets that were not solicited by any of the outgoing request packets are identified responsively to monitoring the outgoing request packets and the incoming response packets. A characteristic that differentiates between the identified incoming response packets and the incoming response packets that were solicited by the outgoing request packets is determined. A guard device in the external network is instructed to inhibit the transmission over the link of subsequent unsolicited response packets based on the characteristic.