Packet #117880

Database ID:	117880
Mesh Packet ID:	`0xd68f1ef7` Used for correlation across gateways
Timestamp:	2026-04-28 12:09:28 UTC
From Node:	Meshtastic 13a8 (13a8)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	n3v_cl-bot (nbot)
Channel:	LongFast
RSSI:	-137 dBm
SNR:	-13.0 dBm
Hop Info:	3/3 hops Start: 3, Limit: 0
Relay Node:	`18` Last byte of the last hop that relayed this packet

Long Name:	Meshtastic 13a8
Short Name:	13a8
Node ID:	!a0cb13a8
MAC Address:	MO2gyxOo
Hardware:	HELTEC_V3

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:	80 bytes
Gateway:	!9e8501d0
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 3

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

Field	Value
`gateway_id`	`!9e8501d0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`2697663400` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`NODEINFO_APP` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-137.0` dBm Signal strength at gateway	int32
`rx_snr`	`-13.00` dB Signal quality at gateway	float
`rx_time`	`1777378167` 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`	`24` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	Not set	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 (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!9e8501d0`
Signal Metrics:	RSSI: -137.0 dBm SNR: -13.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	80 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!a0cb13a8", "long_name": "Meshtastic 13a8", "short_name": "13a8", "macaddr": "MO2gyxOo", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 2697663400, "to": 4294967295, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhYTBjYjEzYTgSD01lc2h0YXN0aWMgMTNhOBoEMTNhOCIGMO2gyxOoKCtCIItUIczXIIlC7ywDX7yrpDwo5F2mcFcL9SgAdCQvxLkVSAA=", "bitfield": 1 }, "id": 3599703799, "rx_time": 1777378167, "rx_snr": -13.0, "rx_rssi": -137, "hop_start": 3, "relay_node": 24, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "LongFast", "gateway_id": "!9e8501d0" }, "mesh_packet": { "from": 2697663400, "to": 4294967295, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhYTBjYjEzYTgSD01lc2h0YXN0aWMgMTNhOBoEMTNhOCIGMO2gyxOoKCtCIItUIczXIIlC7ywDX7yrpDwo5F2mcFcL9SgAdCQvxLkVSAA=", "bitfield": 1, "parsed_payload": { "id": "!a0cb13a8", "long_name": "Meshtastic 13a8", "short_name": "13a8", "macaddr": "MO2gyxOo", "hw_model": "HELTEC_V3", "public_key": "i1QhzNcgiULvLANfvKukPCjkXaZwVwv1KAB0JC/EuRU=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } }, "id": 3599703799, "rx_time": 1777378167, "rx_snr": -13.0, "rx_rssi": -137, "hop_start": 3, "relay_node": 24, "transport_mechanism": "TRANSPORT_LORA" } }

Raw Packet Data (80 bytes)

0a09216130636231336138120f4d65736874617374696320313361381a0431336138220630eda0cb13a8282b42208b5421ccd7208942ef2c035fbcaba43c28e45da670570bf5280074242fc4b9154800

Hex Analysis:

Size:	80 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 #117880 Success

Packet Information

Payload Data

Decoded Data: