Packet #1219515

Database ID:	1219515
Mesh Packet ID:	`0x4a58f4dc` Used for correlation across gateways
Timestamp:	2026-07-17 09:32:41 UTC
From Node:	UN7MCB (DOM)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	UN7MCB (UN7M)
Channel:	UN7MCBDOM
RSSI:	-56 dBm
SNR:	5.75 dBm
Hop Info:	0/3 hops Start: 3, Limit: 3

Long Name:	UN7MCB
Short Name:	DOM
Node ID:	!bdf9e8bc
MAC Address:	fJ69+ei8
Hardware:	DIY_V1

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:	70 bytes
Gateway:	!f5e6574c
Channel:	UN7MCBDOM
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 3

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: UN7MCBDOM
+ 2 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!f5e6574c` Node ID format
`channel_id`	`UN7MCBDOM`
`packet`	`MeshPacket` (70 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3187271868` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`70` 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`	`-56.0` dBm Signal strength at gateway	int32
`rx_snr`	`5.75` dB Signal quality at gateway	float
`rx_time`	`1784262759` 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`	`188` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1784262761.33686` 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)
✓ Custom channel: UN7MCBDOM
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!f5e6574c`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -56.0 dBm SNR: 5.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	70 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!bdf9e8bc", "long_name": "UN7MCB", "short_name": "DOM", "macaddr": "fJ69+ei8", "hw_model": "DIY_V1" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!f5e6574c", "channel_id": "UN7MCBDOM", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3187271868, "to": 4294967295, "id": 1247343836, "rx_time": 1784262759, "rx_snr": 5.75, "rx_rssi": -56, "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": 188, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092162646639653862631206554e374d43421a03444f4d22067c9ebdf9e8bc282742204374bee58b94d3b7dcfb9bbb2a4417c2cf3ec80f23e61af0836d0dfafe88651a4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!bdf9e8bc", "long_name": "UN7MCB", "short_name": "DOM", "macaddr": "fJ69+ei8", "hw_model": "DIY_V1", "public_key": "Q3S+5YuU07fc+5u7KkQXws8+yA8j5hrwg20N+v6IZRo=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (70 bytes)

0a092162646639653862631206554e374d43421a03444f4d22067c9ebdf9e8bc282742204374bee58b94d3b7dcfb9bbb2a4417c2cf3ec80f23e61af0836d0dfafe88651a4800

Hex Analysis:

Size:	70 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 #1219515 Success

Packet Information

Payload Data

Decoded Data: