Method and apparatus for security encapsulating IP datagrams
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United States of America Patent
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Mar 22, 2016
Grant Date -
Dec 22, 2011
app pub date -
May 17, 2011
filing date -
May 17, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A method and corresponding apparatus are provided to security encapsulate an original IP datagram received from a network. It is first determined whether an IP payload of the original IP datagram is a TCP segment, UDP datagram or packet of another type of network protocol. Based on this determination, a portion of the IP payload is encrypted resulting in an encrypted payload. A security encapsulated IP packet is then formed with source IP address, destination IP address, and IP protocol field from the original IP datagram, and the encrypted payload. The security encapsulated IP packet is then provided to the network.
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