Packet #1222537

Database ID:	1222537
Mesh Packet ID:	`0x780db334` Used for correlation across gateways
Timestamp:	2026-04-23 17:55:25 UTC
From Node:	Meshtastic fa98 (fa98)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	SPHTMF (🦑)
Channel:	MediumFast
RSSI:	-101 dBm
SNR:	2.0 dBm
Hop Info:	1/7 hops Start: 7, Limit: 6
Relay Node:	`1e` 🐀 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	Meshtastic fa98
Short Name:	fa98
Node ID:	!6984fa98
MAC Address:	kHBphPqY
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:	!02ed607c
Channel:	MediumFast
Payload Type:	NODEINFO_APP
Hop Count:	1 / 7

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`	`!02ed607c` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (80 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1770322584` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`80` bytes	size
`hop_limit`	`6` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-101.0` dBm Signal strength at gateway	int32
`rx_snr`	`2.00` dB Signal quality at gateway	float
`rx_time`	`1776965655` 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`	`30` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1776966925.2114346` 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 (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!02ed607c`
Signal Metrics:	RSSI: -101.0 dBm SNR: 2.00 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": "!6984fa98", "long_name": "Meshtastic fa98", "short_name": "fa98", "macaddr": "kHBphPqY", "hw_model": "HELTEC_V4" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!02ed607c", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1770322584, "to": 4294967295, "id": 2014163764, "rx_time": 1776965655, "rx_snr": 2.0, "rx_rssi": -101, "hop_limit": 6, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 30, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213639383466613938120f4d65736874617374696320666139381a0466613938220690706984fa98286e4220d2cbca59930b42ba648a8c1f5b6df501ec9583fe01f1bef1d03929f102f22b5f4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!6984fa98", "long_name": "Meshtastic fa98", "short_name": "fa98", "macaddr": "kHBphPqY", "hw_model": "HELTEC_V4", "public_key": "0svKWZMLQrpkiowfW231AeyVg/4B8b7x0Dkp8QLyK18=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (80 bytes)

0a09213639383466613938120f4d65736874617374696320666139381a0466613938220690706984fa98286e4220d2cbca59930b42ba648a8c1f5b6df501ec9583fe01f1bef1d03929f102f22b5f4800

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 #1222537 Success

Packet Information

Payload Data

Decoded Data: