Motorola Netopia 2200 Series User Manual page 13

Wide Area Network Termination
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Your network may change address with each connection making it more difficult to
attack.
When you configure Instant On access, you can also configure an idle time-out value. Your
Gateway monitors traffic over the Internet link and when there has been no traffic for the
configured number of seconds, it disconnects the link.
When new traffic that is destined for the Internet arrives at the Gateway, the Gateway will
instantly re-establish the link.
Your service provider may be using a system that assigns the Internet address of your
Gateway out of a pool of many possible Internet addresses. The address assigned varies
with each connection attempt, which makes your network a moving target for any attacker.
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