Patent ID: 7325248
Filing Date: 2008-01-29
Classification: H04L

Abstract:
1. A method of controlling a personal firewall in a client computer, said method comprising providing said personal firewall with at least one set of security rules to be used when said client computer is connected to a home network of said client computer, and at least one set of security rules to be used when said client computer is connected to foreign networks, determining by said personal firewall a current location of said client computer based solely on an Internet Protocol(IP) address currently used by said client computer, selecting by said personal firewall a predetermined network element that should be available for verification from the current location determined based solely on the IP address currently used by said client computer, said predetermined network element being able to respond only if said client computer is located in the network in which it is assumed to be on the basis of the current IP address, sending by the personal firewall to the selected predetermined network element a request to send a response with some data proving an identity of the selected predetermined network element, and automatically selecting by the personal firewall one of said sets of security rules by said personal firewall according to said current location of said client computer, if the selected predetermined network element sends a response with the required identity data to the personal firewall and thereby verifies the current location determined based solely on the IP address currently used by said client computer, or determining the current location unverified and selecting a default set of security rules by the personal firewall, if the personal firewall fails to receive from the selected predetermined network element a response with the required identity data which verifies the current location determined based solely on the IP address currently used by said client computer.