3.4.7.1 Invalid Message Received

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If an invalid message is received, the initiator MUST send a NOTIFY_STATUS Notify payload and delete its SA state for this negotiation.

The message MUST be constructed as follows:

  • HDR: The ISAKMP header MUST be identical to the IKE Informational packet, as specified in [RFC2409] section 5.7, and the exchange type MUST be 246 (NOTIFY exchange type).

  • Notify (Status): This notify MUST have the RELIABLE_NOTIFY_FLAG, as specified in section 2.2.3.5, set to TRUE.