+-------------------------------------------+ | IPsec Management System | I2NSF User +-------------------------------------------+ | | I2NSF Consumer-Facing | Interface +-------------------------------------------+ | IKEv2 Configuration, PAD and SPD Entries | I2NSF | Distribution | Controller +-------------------------------------------+ | | I2NSF NSF-Facing | Interface +-------------------------------------------+ | IKEv2 | IPsec(PAD, SPD) | Network |-------------------------------------------| Security | IPsec Data Protection and Forwarding | Function +-------------------------------------------+