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Problem Statement To perform its function, an intermediary may need to: Signal to the end points Inspect or even modify the traffic sent between the end points Threats: An attacker can send bogus signals to end points Existing end-to-end security may be compromised An attacker can gain unauthorized access to end to end traffic Need to securely enable intermediary-based transport services while minimizing impact on end-to-end security Solicitation and configuration of services Security relationships between end-points, intermediary |