Packet #15926324

Database ID:	15926324
Mesh Packet ID:	`0x2eb2697c` Used for correlation across gateways
Timestamp:	2026-04-18 03:36:55 UTC
From Node:	SVAO mob 66c4 (66c4)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Medved GW8 (MED8)
Channel:	MediumFast
RSSI:	-121 dBm
SNR:	-15.0 dBm
Hop Info:	2/6 hops Start: 6, Limit: 4

Long Name:	SVAO mob 66c4
Short Name:	66c4
Node ID:	!02ed66c4
MAC Address:	PA8C7WbE
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:	78 bytes
Gateway:	!fa68e0c0
Channel:	MediumFast
Payload Type:	NODEINFO_APP
Hop Count:	2 / 6

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!fa68e0c0` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (78 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`49112772` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`78` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`6` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-121.0` dBm Signal strength at gateway	int32
`rx_snr`	`-15.00` dB Signal quality at gateway	float
`rx_time`	`1776225709` 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`	`140` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1776472615.3220327` 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: MediumFast
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!fa68e0c0`
Signal Metrics:	RSSI: -121.0 dBm SNR: -15.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	78 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!02ed66c4", "long_name": "SVAO mob 66c4", "short_name": "66c4", "macaddr": "PA8C7WbE", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!fa68e0c0", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 49112772, "to": 4294967295, "id": 783444348, "rx_time": 1776225709, "rx_snr": -15.0, "rx_rssi": -121, "hop_limit": 4, "hop_start": 6, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 140, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213032656436366334120d5356414f206d6f6220363663341a043636633422063c0f02ed66c4282b4220debd1969f83cb1c0d13fd9c94d7e0c36d25f7e662ec77ff912a9f63aeb9fdd794800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!02ed66c4", "long_name": "SVAO mob 66c4", "short_name": "66c4", "macaddr": "PA8C7WbE", "hw_model": "HELTEC_V3", "public_key": "3r0Zafg8scDRP9nJTX4MNtJffmYux3/5Eqn2Ouuf3Xk=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (78 bytes)

0a09213032656436366334120d5356414f206d6f6220363663341a043636633422063c0f02ed66c4282b4220debd1969f83cb1c0d13fd9c94d7e0c36d25f7e662ec77ff912a9f63aeb9fdd794800

Hex Analysis:

Size:	78 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 #15926324 Success

Packet Information

Payload Data

Decoded Data: