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:
Feb. 14, 2017
Filed:
Jun. 29, 2015
Sophos Limited, Abingdon, Oxfordshire, GB;
Jonathan Egan Salcedo, San Francisco, CA (US);
Sophos Limited, Abingdon, GB;
Abstract
A firewall uses a variety of techniques to obtain a useful domain name from a network request, that is, a domain name that facilitates the accurate enforcement of domain-based security rules for network traffic at the firewall. If the network request includes an Internet Protocol (IP) address instead of the domain name, the firewall may begin with a reverse domain name lookup. If this technique fails to adequately resolve the domain name, then the firewall may attempt a hypertext transfer protocol (HTTP) GET request to the IP address and investigate the header for useful domain name information. The firewall may also or instead initiate a secure connection to the IP address and analyze a certificate returned from the destination for the presence of domain name information. These measures can produce one or more domain names that can be collectively analyzed to select a suitable domain name for the application of a domain-based security rule or policy by the firewall.