The Commercial Internet Protocol Security Option (CIPSO) is a mechanism for attaching security labels to

Internet Protocol The Internet Protocol (IP) is the network layer communications protocol in the Internet protocol suite for relaying datagrams across network boundaries. Its routing function enables internetworking, and essentially establishes the Internet. IP ...

traffic. It was supported by an IETF working group in coordination with the Trusted Systems Interoperability Group. CIPSO was used by Solaris Trusted Extensions. It has been replaced by the U.S. DoD Security Options for the Internet Protocol, defined in .

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