Abstract: In one embodiment, a system for extending IPSec communication over a wireless mesh network is disclosed. A VPN appliance is operative to establish an end-to-end communication tunnel with at least one of a plurality of wireless mesh gateways. The VPN appliance is configured for secure communication with at least one of the mesh gateways, by establishing an outer tunnel. At least one of the wireless mesh gateways is configured to establish connection with a plurality of wireless routers, where the wireless routers are configured to establish connection with a plurality of intelligent communication devices. Multiple paths exist for routing data packets from the plurality of mesh gateways to the plurality of intelligent communication devices. The VPN appliance is also configured to establish a plurality of inner tunnels nested within the outer tunnel.

Abstract: Heuristic analysis of image is performed to detect pornographic content. Pixels of an image representing a flesh-tone are identified. A heuristic analysis of the image is performed to classify the image as being pornographic or not. The analysis uses measures of a set of predetermined characteristics of the identified pixels as a heuristic to indicate a likelihood that the identified pixels contain pornographic content or not. Particular characteristics used are: the thickness of a region of identified pixels; the area of regions of adjacent identified pixels; the flatness of regions of adjacent identified pixels; the distance of pixels from the center of the image; the degree of texture of regions adjacent identified pixels; the likelihood of the identified pixels being flesh-tone, and the area of the identified pixels.

Abstract: Heuristic analysis of image is performed to detect pornographic content. Pixels of an image representing a flesh-tone are identified. A heuristic analysis of the image is performed to classify the image as being pornographic or not. The analysis uses measures of a set of predetermined characteristics of the identified pixels as a heuristic to indicate a likelihood that the identified pixels contain pornographic content or not. Particular characteristics used are: the thickness of a region of identified pixels; the area of regions of adjacent identified pixels; the flatness of regions of adjacent identified pixels; the distance of pixels from the centre of the image; the degree of texture of regions adjacent identified pixels; the likelihood of the identified pixels being flesh-tone, and the area of the identified pixels.