Packet #3113118

Database ID:	3113118
Mesh Packet ID:	`0x0bb76e9d` Used for correlation across gateways
Timestamp:	2026-03-25 14:43:37 UTC
From Node:	DΞLTΔ_MGRD-GT-8 (MGRD)
To Node:	Serip Portable-8 (NMP8)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	MPFT-CL-8 (MPF8)
Channel:	LongFast
RSSI:	-121 dBm
SNR:	-17.0 dBm
Hop Info:	0/4 hops Start: 4, Limit: 4

Long Name:	DΞLTΔ_MGRD-GT-8
Short Name:	MGRD
Node ID:	!fa754011
MAC Address:	xaD6dUAR
Hardware:	SEEED_SOLAR_NODE

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:	84 bytes
Gateway:	!d831d344
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 4

Privacy Summary

Exposure Level:
Direct Message

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

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!d831d344` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (84 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`4201988113` Source node ID	uint32
`to`	`2658692360` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`84` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-121.0` dBm Signal strength at gateway	int32
`rx_snr`	`-17.00` dB Signal quality at gateway	float
`rx_time`	`1774449817` 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`	`17` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1774449817.9091702` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!d831d344`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -121.0 dBm SNR: -17.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	84 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!fa754011", "long_name": "DΞLTΔ_MGRD-GT-8", "short_name": "MGRD", "macaddr": "xaD6dUAR", "hw_model": "SEEED_SOLAR_NODE" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!d831d344", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 4201988113, "to": 2658692360, "id": 196570781, "rx_time": 1774449817, "rx_snr": -17.0, "rx_rssi": -121, "hop_limit": 4, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 17, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216661373534303131121144ce9e4c54ce945f4d4752442d47542d381a044d4752442206c5a0fa754011285f380c422061a4cf358642a876992e4d0a7a764b01a01f053e8e4945a2fd95129b180d53064800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!fa754011", "long_name": "DΞLTΔ_MGRD-GT-8", "short_name": "MGRD", "macaddr": "xaD6dUAR", "hw_model": "SEEED_SOLAR_NODE", "role": "CLIENT_BASE", "public_key": "YaTPNYZCqHaZLk0KenZLAaAfBT6OSUWi/ZUSmxgNUwY=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (84 bytes)

0a09216661373534303131121144ce9e4c54ce945f4d4752442d47542d381a044d4752442206c5a0fa754011285f380c422061a4cf358642a876992e4d0a7a764b01a01f053e8e4945a2fd95129b180d53064800

Hex Analysis:

Size:	84 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 #3113118 Success

Packet Information

Payload Data

Decoded Data: