Packet #3217497

Database ID:	3217497
Mesh Packet ID:	`0x91c53b68` Used for correlation across gateways
Timestamp:	2026-04-01 03:04:49 UTC
From Node:	ALM-CM-8 (ALM)
To Node:	!d45ab73c (b73c)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Funny-CL-868 (FUN)
Channel:	LongFast
RSSI:	-118 dBm
SNR:	-16.25 dBm
Hop Info:	1/2 hops Start: 2, Limit: 1

Long Name:	ALM-CM-8
Short Name:	ALM
Node ID:	!d3091791
MAC Address:	6IjTCReR
Hardware:	TRACKER_T1000_E

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:	72 bytes
Gateway:	!da741138
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 2

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!da741138` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (72 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3540588433` Source node ID	uint32
`to`	`3562714940` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`72` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-118.0` dBm Signal strength at gateway	int32
`rx_snr`	`-16.25` dB Signal quality at gateway	float
`rx_time`	`1775009089` 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`	`81` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1775009089.120418` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

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

Exposure Level: Direct Message

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
✓ Gateway node ID tracked

Exposure Risks:

⚠ 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:	`!da741138`
Signal Metrics:	RSSI: -118.0 dBm SNR: -16.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	72 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!d3091791", "long_name": "ALM-CM-8", "short_name": "ALM", "macaddr": "6IjTCReR", "hw_model": "TRACKER_T1000_E" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!da741138", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3540588433, "to": 3562714940, "id": 2445622120, "rx_time": 1775009089, "rx_snr": -16.25, "rx_rssi": -118, "hop_limit": 1, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 81, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092164333039313739311208414c4d2d434d2d381a03414c4d2206e888d3091791284742207b83276e1746214d6f13464f8a2db51baafa82041e8951c279bd6840b4d1015a4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!d3091791", "long_name": "ALM-CM-8", "short_name": "ALM", "macaddr": "6IjTCReR", "hw_model": "TRACKER_T1000_E", "public_key": "e4MnbhdGIU1vE0ZPii21G6r6ggQeiVHCeb1oQLTRAVo=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (72 bytes)

0a092164333039313739311208414c4d2d434d2d381a03414c4d2206e888d3091791284742207b83276e1746214d6f13464f8a2db51baafa82041e8951c279bd6840b4d1015a4800

Hex Analysis:

Size:	72 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 #3217497 Success

Packet Information

Payload Data

Decoded Data: