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| ESP | |||
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| Protocol, which is designed to provide a mix of security services in IPv4 and IPv6. ESP can be used to provide confidentiality, data origin authentication, connectionless integrity, an anti-replay service a form of partial sequence integrity, and limited traffic flow confidentiality. (The ESP header is inserted after the IP header and before the next layer protocol header (transport mode) or before an encapsulated IP header (tunnel mode); RFC 4303) | |||