Method and system for caching at secure gateways

  • US 7,418,731 B2
  • Filed: 05/03/2004
  • Issued: 08/26/2008
  • Est. Priority Date: 11/06/1997
  • Status: Expired due to Fees
First Claim
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1. A computer gateway for an intranet of computers, comprising:

  • a scanner for scanning incoming files from the Internet and deriving security profiles for the incoming files, wherein each of the security profiles comprises a list of computer commands that a corresponding one of the incoming files is programmed to perform;

    a file cache for storing files that have been scanned by the scanner for future access, wherein each of the stored files is indexed by a file identifier; and

    a security profile cache for storing the security profiles derived by the scanner, wherein each of the security profiles is indexed in the security profile cache by a file identifier associated with a corresponding file stored in the file cache; and

    a security policy cache for storing security policies for intranet computers within the intranet, the security policies each including a list of restrictions for files that are transmitted to a corresponding subset of the intranet computers.

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