Packet #461556

Database ID:	461556
Mesh Packet ID:	`0x3d14d8c4` Used for correlation across gateways
Timestamp:	2026-02-14 23:29:43 UTC
From Node:	Meshtastic c1c0 (c1c0)
To Node:	KO4RTY Portable/Mobile (JP11)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Meshtastic 6b58 (6b58)
Channel:	LongFast
RSSI:	-123 dBm
SNR:	-16.5 dBm
Hop Info:	0/3 hops Start: 3, Limit: 3
Relay Node:	`c0` c1c0 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	Meshtastic c1c0
Short Name:	c1c0
Node ID:	!b2a7c1c0
MAC Address:	gPGyp8HA
Hardware:	HELTEC_V4

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:	!7d076b58
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 3

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
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!7d076b58` 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`	`2997338560` Source node ID	uint32
`to`	`2712461637` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-123.0` dBm Signal strength at gateway	int32
`rx_snr`	`-16.50` dB Signal quality at gateway	float
`rx_time`	`1771111785` 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`	`192` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1771111783.184464` 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
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!7d076b58`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -123.0 dBm SNR: -16.50 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": "!b2a7c1c0", "long_name": "Meshtastic c1c0", "short_name": "c1c0", "macaddr": "gPGyp8HA", "hw_model": "HELTEC_V4" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!7d076b58", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2997338560, "to": 2712461637, "id": 1024776388, "rx_time": 1771111785, "rx_snr": -16.5, "rx_rssi": -123, "hop_limit": 3, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 192, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216232613763316330120f4d65736874617374696320633163301a0463316330220680f1b2a7c1c0286e4220b1121f105280007cb137fb7d0e7c917f82ee9d52acdb1f13fc07e1437648323f4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!b2a7c1c0", "long_name": "Meshtastic c1c0", "short_name": "c1c0", "macaddr": "gPGyp8HA", "hw_model": "HELTEC_V4", "public_key": "sRIfEFKAAHyxN/t9DnyRf4LunVKs2x8T/AfhQ3ZIMj8=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09216232613763316330120f4d65736874617374696320633163301a0463316330220680f1b2a7c1c0286e4220b1121f105280007cb137fb7d0e7c917f82ee9d52acdb1f13fc07e1437648323f4800

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 #461556 Success

Packet Information

Payload Data

Decoded Data: