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. 10, 2011
Filed:
Feb. 23, 2006
Troy H. Sherman, San Jose, CA (US);
Bradley Neil Dunsmore, Raleigh, NC (US);
Kevin Roy Mcmenamy, Fremont, CA (US);
Salah Nassar, Fremont, CA (US);
Monica Dattatraya Joshi, San Jose, CA (US);
Troy H. Sherman, San Jose, CA (US);
Bradley Neil Dunsmore, Raleigh, NC (US);
Kevin Roy McMenamy, Fremont, CA (US);
Salah Nassar, Fremont, CA (US);
Monica Dattatraya Joshi, San Jose, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Systems and methods perform analysis of ICMP packets received at a network device port to determine if the ICMP packet is valid and thus should be forwarded. One aspect of the systems and methods includes configuring a port to be a trusted port in which any type of ICMP message may be considered valid. For untrusted ports, the system analyzes the ICMP packet to determine if the packet is one that should be received on an untrusted port. A further aspect of the systems and methods includes analyzing the ICMP packet data to determine if packet addresses have been spoofed or altered.