Packet #2913153

Database ID:	2913153
Mesh Packet ID:	`0xc083d3fc` Used for correlation across gateways
Timestamp:	2025-07-05 18:08:29 UTC
From Node:	EA2GNQ🚗 (CARL)
To Node:	📡 EA2DTN ANSOAIN 📡 (TXUS)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	2EA2FES 868 📡🌐 (2FES)
Channel:	LongFast
RSSI:	-127 dBm
SNR:	-15.75 dBm
Hop Info:	3/3 hops Start: 3, Limit: 0

Long Name:	EA2GNQ🚗
Short Name:	CARL
Node ID:	!db2fa65c
MAC Address:	EFHbL6Zc
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:	73 bytes
Gateway:	!849b7244
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 3

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`	`!849b7244` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (73 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3677333084` Source node ID	uint32
`to`	`3342930073` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`73` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-127.0` dBm Signal strength at gateway	int32
`rx_snr`	`-15.75` dB Signal quality at gateway	float
`rx_time`	`1751738908` 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`	`153` Next hop node ID	uint32
`relay_node`	`148` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1751738909.890322` 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 (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!849b7244`
Signal Metrics:	RSSI: -127.0 dBm SNR: -15.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	73 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!db2fa65c", "long_name": "EA2GNQ🚗", "short_name": "CARL", "macaddr": "EFHbL6Zc", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!849b7244", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3677333084, "to": 3342930073, "id": 3229864956, "rx_time": 1751738908, "rx_snr": -15.75, "rx_rssi": -127, "hop_limit": 0, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 153, "relay_node": 148, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216462326661363563120a454132474e51f09f9a971a044341524c22061051db2fa65c282b4220fc23db75c7f36ae263882287c9295e8510c9bc1fa8dd746c478c140f1d559208", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!db2fa65c", "long_name": "EA2GNQ🚗", "short_name": "CARL", "macaddr": "EFHbL6Zc", "hw_model": "HELTEC_V3", "public_key": "/CPbdcfzauJjiCKHySlehRDJvB+o3XRsR4wUDx1Vkgg=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (73 bytes)

0a09216462326661363563120a454132474e51f09f9a971a044341524c22061051db2fa65c282b4220fc23db75c7f36ae263882287c9295e8510c9bc1fa8dd746c478c140f1d559208

Hex Analysis:

Size:	73 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 #2913153 Success

Packet Information

Payload Data

Decoded Data: