Packet #630765

Database ID:	630765
Mesh Packet ID:	`0xb5e14d05` Used for correlation across gateways
Timestamp:	2026-01-09 11:32:31 UTC
From Node:	Meshtastic ac2c (brwn)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Babushkina29 (B29)
Channel:	LongFast
RSSI:	-112 dBm
SNR:	-4.25 dBm
Hop Info:	-1/0 hops Start: 0, Limit: 1

Long Name:	Meshtastic ac2c
Short Name:	ac2c
Node ID:	!02e5ac2c
MAC Address:	PA8C5aws
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:	!db516588
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	-1 / Unknown

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`	`!db516588` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`48606252` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	Not set	uint32
`hops_taken`	`-1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-112.0` dBm Signal strength at gateway	int32
`rx_snr`	`-4.25` dB Signal quality at gateway	float
`rx_time`	`1767958288` 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`	Not set	uint32
`tx_after`	Not set	uint32
`timestamp`	`1767958351.6236336` 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 (-1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db516588`
Signal Metrics:	RSSI: -112.0 dBm SNR: -4.25 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": "!02e5ac2c", "long_name": "Meshtastic ac2c", "short_name": "ac2c", "macaddr": "PA8C5aws", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db516588", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 48606252, "to": 4294967295, "id": 3051441413, "rx_time": 1767958288, "rx_snr": -4.25, "rx_rssi": -112, "hop_limit": 1, "hop_start": 0, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213032653561633263120f4d65736874617374696320616332631a046163326322063c0f02e5ac2c282b422081b63afb0b08c42c559c0255b3794cee9fa5e6bc27db5fdee23ac18b7f1176344800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!02e5ac2c", "long_name": "Meshtastic ac2c", "short_name": "ac2c", "macaddr": "PA8C5aws", "hw_model": "HELTEC_V3", "public_key": "gbY6+wsIxCxVnAJVs3lM7p+l5rwn21/e4jrBi38RdjQ=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09213032653561633263120f4d65736874617374696320616332631a046163326322063c0f02e5ac2c282b422081b63afb0b08c42c559c0255b3794cee9fa5e6bc27db5fdee23ac18b7f1176344800

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 #630765 Success

Packet Information

Payload Data

Decoded Data: