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Mandatory protection of the DTN infrastructure from unauthorized use—detect illegitimate traffic ASAP and drop it immediately Hop-by-hop bundle header integrity Hop-by-hop bundle sender authentication Access Control (only legitimate applications/users with appropriate permissions may inject bundles) Limited protection against DoS by detecting illegitimate traffic at its first hop and discarding it immediately Optional protection of application data— destination application provided with security even when a router may be compromised End-to-end bundle integrity End-to-end bundle source and destination authentication Replay detection at destination Support for end-to-end payload confidentiality Security policy router capabilities for enforcing a finer-granularity of access control Summary of DTN Security Services |