Packet #2700752

Packet Information

Database ID:	2700752
Mesh Packet ID:	`0x40fb5719` Used for correlation across gateways
Timestamp:	2025-11-24 17:29:43 UTC
From Node:	Mobile Fish 1 \| nyme.sh (MF1)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	RANGE_TEST_APP Port: 66

Gateway:	Mobile Fish 1 \| nyme.sh (MF1)
Channel:	MediumFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/0 hops Start: 0, Limit: 0
Relay Node:	`cc` MF1 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Payload Data

Protocol: RANGE_TEST_APP

Size: 6 bytes

Decoded: No

No decoder available for RANGE_TEST_APP

Text Content:

736571203338

Raw Packet Analysis

Complete field breakdown and MQTT privacy/exposure analysis

Packet Structure

MQTT Packet Flow:
ServiceEnvelope (MQTT layer) → MeshPacket (Mesh layer) → Decoded Payload (Application data)

Total Size:	6 bytes
Gateway:	!9ea3eccc
Channel:	MediumFast
Payload Type:	RANGE_TEST_APP
Hop Count:	Unknown / Unknown

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 2 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!9ea3eccc` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (6 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2661543116` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`66` RANGE_TEST_APP	enum
`decoded.payload_length`	`6` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	Not set	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1764005486` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`64` Packet priority level	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`204` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1764005383.8229597` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Broadcast

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers

MQTT-Specific Fields

Gateway ID:	`!9ea3eccc`
Zero Hop Policy:	Enabled Direct gateway connection

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!9ea3eccc", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2661543116, "to": 4294967295, "id": 1090213657, "rx_time": 1764005486, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 0, "hop_start": 0, "via_mqtt": 0, "want_ack": 0, "priority": 64, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 204, "tx_after": 0, "decoded": { "portnum": 66, "payload": "736571203338", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "raw_bytes": "736571203338", "type": "unknown_or_custom", "portnum": "RANGE_TEST_APP", "note": "No decoder available for RANGE_TEST_APP" } } } }

Raw Packet Data (6 bytes)