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Authentication, Authorization and Accounting Infrastructure Authorization might not always happen at an NSIS element itself (see roaming scenarios) Information which is exchanged between the end host (e.g., NI) needs to be forwarded to a backend server (e.g., PDP or AAA server) NSIS and AAA protocols need to aligned See also related activities in AAA working group. AAA Client NSIS Initiatior Network Entity NSIS AAA Server COPS / Diameter Authentication and Authorization Credentials Back - end AAA Server |