Dynamic address assignment for access control on DHCP networks
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United States of America Patent
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Feb 15, 2011
Issued Date -
N/A
app pub date -
Aug 28, 2009
filing date -
Sep 14, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
Systems and methods of managing security on a computer network are disclosed. The computer network includes a restricted subnet and a less-restricted subnet. Access to the restricted subnet is controlled by a network filter, optionally inserted as a software shim on a DHCP server. In some embodiments, the network filter is configured to manipulate relay IP addresses to control whether the DHCP server provides, in a DHCPOFFER packet, an IP address that can be used to access the restricted subset. In some embodiments, configuration information is communicated between the DHCP server and the network filter via DHCPOFFER packets.
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