Packet #2541828

Database ID:	2541828
Mesh Packet ID:	`0x00123219` Used for correlation across gateways
Timestamp:	2026-03-28 11:58:56 UTC
From Node:	Petrich (534)
To Node:	GBoys_Tracker (GB)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	CityMesh (City)
Channel:	Bulgaria
RSSI:	-82 dBm
SNR:	11.5 dBm
Hop Info:	1/2 hops Start: 2, Limit: 1
Relay Node:	`0c` iTSC , AP05 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	Petrich
Short Name:	534
Node ID:	!33688e80
MAC Address:	ZOgzaI6A
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:	73 bytes
Gateway:	!a0cbb8ac
Channel:	Bulgaria
Payload Type:	NODEINFO_APP
Hop Count:	1 / 2

Privacy Summary

Exposure Level:
Direct Message

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

Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (1 hops)
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!a0cbb8ac` Node ID format
`channel_id`	`Bulgaria`
`packet`	`MeshPacket` (73 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`862490240` Source node ID	uint32
`to`	`1695050734` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`73` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-82.0` dBm Signal strength at gateway	int32
`rx_snr`	`11.50` dB Signal quality at gateway	float
`rx_time`	`1774699136` 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`	`12` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1774699136.9727113` 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
✓ Custom channel: Bulgaria
✓ Gateway node ID tracked

Exposure Risks:

⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!a0cbb8ac`
Signal Metrics:	RSSI: -82.0 dBm SNR: 11.50 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": "!33688e80", "long_name": "Petrich", "short_name": "534", "macaddr": "ZOgzaI6A", "hw_model": "HELTEC_WIRELESS_TRACKER" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a0cbb8ac", "channel_id": "Bulgaria", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 862490240, "to": 1695050734, "id": 1192473, "rx_time": 1774699136, "rx_snr": 11.5, "rx_rssi": -82, "hop_limit": 1, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 12, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092133333638386538301207506574726963681a03353334220664e833688e802830380b4220be2ef3eb318262e61f303d55d7be57c93ee86580a481cb647d41be2e39c6a0294801", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!33688e80", "long_name": "Petrich", "short_name": "534", "macaddr": "ZOgzaI6A", "hw_model": "HELTEC_WIRELESS_TRACKER", "role": "ROUTER_LATE", "public_key": "vi7z6zGCYuYfMD1V175XyT7oZYCkgctkfUG+LjnGoCk=", "is_unmessagable": true, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (73 bytes)

0a092133333638386538301207506574726963681a03353334220664e833688e802830380b4220be2ef3eb318262e61f303d55d7be57c93ee86580a481cb647d41be2e39c6a0294801

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 #2541828 Success

Packet Information

Payload Data

Decoded Data: