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:
Nov. 07, 2023
Filed:
Dec. 08, 2020
Barracuda Networks, Inc., San Jose, CA (US);
Fleming Shi, Scotts Valley, CA (US);
Barracuda Networks, Inc., Campbell, CA (US);
Abstract
An approach is proposed to support Internet traffic inspection to detect and prevent access to blocked websites or resources. First, access requests initiated by users to websites hosted on servers over a network are intercepted by an inspection agent, which identifies and caches a pair of the domain/host name of each website and its corresponding IP address on the Internet to a localized DNS cache. When a newly intercepted access request identifies the website by its IP address only without specifying its domain/host name, the inspection agent looks up the domain name by its IP address from the DNS cache. If no domain name is found, the inspection agent redirects the access request to a proxy server instead of forwarding it to the server hosting the website for further inspection. The proxy server then inspects the IP address to determine if it is a legitimate website or not.