Dynamic topology notification extensions for the domain name system
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United States of America Patent
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Dec 21, 2004
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N/A
app pub date -
Dec 31, 1998
filing date -
Dec 31, 1998
priority date (Note) -
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Abstract
A determination whether a network is connected to the Internet is made by configuring a first computer in the network to periodically generate a heartbeat message to a second computer outside the network. The second computer determines whether the heartbeat message is received, the receipt of which heartbeat message is indicative that the network is connected to the Internet.
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