Packet #3624496

Database ID:	3624496
Mesh Packet ID:	`0x16813c28` Used for correlation across gateways
Timestamp:	2025-12-15 05:03:55 UTC
From Node:	Psst!-05 Elecrow ThinkNode-M1 (968b)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	bcannon4 (BC4)
Channel:	LongFast
RSSI:	-118 dBm
SNR:	-6.5 dBm
Hop Info:	4/5 hops Start: 5, Limit: 1
Relay Node:	`e1` Last byte of the last hop that relayed this packet

Long Name:	Psst!-05 Elecrow ThinkNode-M1
Short Name:	968b
Node ID:	!325e968b
MAC Address:	04syXpaL
Hardware:	THINKNODE_M1

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:	92 bytes
Gateway:	!36a8bf51
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 5

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!36a8bf51` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (92 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`845059723` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`92` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-118.0` dBm Signal strength at gateway	int32
`rx_snr`	`-6.50` dB Signal quality at gateway	float
`rx_time`	`1765775179` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	Not set	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`225` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765775035.7315097` 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)
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!36a8bf51`
Signal Metrics:	RSSI: -118.0 dBm SNR: -6.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	92 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!325e968b", "long_name": "Psst!-05 Elecrow ThinkNode-M1", "short_name": "968b", "macaddr": "04syXpaL", "hw_model": "THINKNODE_M1" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!36a8bf51", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 845059723, "to": 4294967295, "id": 377568296, "rx_time": 1765775179, "rx_snr": -6.5, "rx_rssi": -118, "hop_limit": 1, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 225, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213332356539363862121d50737374212d303520456c6563726f77205468696e6b4e6f64652d4d311a04393638622206d38b325e968b285942200d292d15a75c7b01132ea6505210f0a3808d830e5777c742d144c49942cd582d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!325e968b", "long_name": "Psst!-05 Elecrow ThinkNode-M1", "short_name": "968b", "macaddr": "04syXpaL", "hw_model": "THINKNODE_M1", "public_key": "DSktFadcewETLqZQUhDwo4CNgw5Xd8dC0UTEmULNWC0=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (92 bytes)

0a09213332356539363862121d50737374212d303520456c6563726f77205468696e6b4e6f64652d4d311a04393638622206d38b325e968b285942200d292d15a75c7b01132ea6505210f0a3808d830e5777c742d144c49942cd582d

Hex Analysis:

Size:	92 bytes
Format:	Protobuf (Protocol Buffers)
Encoding:	Binary with varint and length-delimited fields

This is the raw protobuf-encoded payload as received from MQTT. The structure follows the Meshtastic protobuf schema definitions.

Packet #3624496 Success

Packet Information

Payload Data

Decoded Data: