Security Considerations

Security considerations for SIN services cover both networks being used, namely, the PSTN and the Internet. SIN uses the security measures in place for both the networks. With reference to Figure 2, the INAP messages between the SCP and the SIN-enabled SIP entity must be secured by the signaling transport used between the SCP and the SIN-enabled entity. Likewise, the requests coming into the SIN-enabled SIP entity must first be authenticated and, if need be, encrypted as well, using the means and procedures defined in [3] for SIP requests.

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