Packet #902125

Database ID:	902125
Mesh Packet ID:	`0x05e446b9` Used for correlation across gateways
Timestamp:	2025-06-15 12:20:20 UTC
From Node:	0x07cc📱🌐 (🦫)
To Node:	!4d18f0fd (f0fd)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	0x07cc📱🌐 (🦫)
Channel:	LongFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/2 hops Start: 2, Limit: 2

Long Name:	0x07cc📱🌐
Short Name:	🦫
Node ID:	!a0cbd0ac
MAC Address:	MO2gy9Cs
Hardware:	HELTEC_WIRELESS_TRACKER

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:	79 bytes
Gateway:	!a0cbd0ac
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 2

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!a0cbd0ac` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (79 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2697711788` Source node ID	uint32
`to`	`1293480189` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`79` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1749990018` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`70` 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`	`172` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1749990020.71814` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers

MQTT-Specific Fields

Gateway ID:	`!a0cbd0ac`
Zero Hop Policy:	Enabled Direct gateway connection

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	79 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!a0cbd0ac", "long_name": "0x07cc📱🌐", "short_name": "🦫", "macaddr": "MO2gy9Cs", "hw_model": "HELTEC_WIRELESS_TRACKER" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a0cbd0ac", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2697711788, "to": 1293480189, "id": 98846393, "rx_time": 1749990018, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 2, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 70, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 172, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216130636264306163120e307830376363f09f93b1f09f8c901a04f09fa6ab220630eda0cbd0ac283042207fed25e7cb63451b8a9a2b68414dd1c73f6999e3a6bd74ba30dab4ad856881514800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!a0cbd0ac", "long_name": "0x07cc📱🌐", "short_name": "🦫", "macaddr": "MO2gy9Cs", "hw_model": "HELTEC_WIRELESS_TRACKER", "public_key": "f+0l58tjRRuKmitoQU3Rxz9pmeOmvXS6MNq0rYVogVE=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (79 bytes)

0a09216130636264306163120e307830376363f09f93b1f09f8c901a04f09fa6ab220630eda0cbd0ac283042207fed25e7cb63451b8a9a2b68414dd1c73f6999e3a6bd74ba30dab4ad856881514800

Hex Analysis:

Size:	79 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 #902125 Success

Packet Information

Payload Data

Decoded Data: