| 摘要 |
In one embodiment, a method includes an apparatus includes a programmable microprocessor that determines the current security status of a network, generates a signal corresponding to the status, and applies the signal to an indicating device to produce an indication of the security status of the network that is sensible to a user. The indicating device can include an electric light source, such as an LED, or a electro-acoustic transducer, such as a loudspeaker, or both, that produces different colors of light or different sounds or that flashes or sounds intermittently to indicate the current security status of the network, to warn of an unexpected change in the level of security, or to indicate the functionality of other network security measures, such as a firewall or VPN.
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