Packet #14070796

Database ID:	14070796
Mesh Packet ID:	`0xcc5bcdc6` Used for correlation across gateways
Timestamp:	2025-10-07 21:17:34 UTC
From Node:	LM25_Cañaveral_T100e 🚶 (🚶)
To Node:	Armitage (LREC)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	jago1 Cañaveral (jago)
Channel:	Madrid
RSSI:	-108 dBm
SNR:	1.5 dBm
Hop Info:	0/4 hops Start: 4, Limit: 4

Long Name:	LM25_Cañaveral_T100e 🚶
Short Name:	🚶
Node ID:	!77033788
MAC Address:	0rF3AzeI
Hardware:	TRACKER_T1000_E

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:	91 bytes
Gateway:	!ba620088
Channel:	Madrid
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
+ 3 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!ba620088` Node ID format
`channel_id`	`Madrid`
`packet`	`MeshPacket` (91 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1996699528` Source node ID	uint32
`to`	`798281372` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`91` 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`	`-108.0` dBm Signal strength at gateway	int32
`rx_snr`	`1.50` dB Signal quality at gateway	float
`rx_time`	`1759871852` 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`	`136` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1759871854.987737` 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: Madrid
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!ba620088`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -108.0 dBm SNR: 1.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	91 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!77033788", "long_name": "LM25_Cañaveral_T100e 🚶", "short_name": "🚶", "macaddr": "0rF3AzeI", "hw_model": "TRACKER_T1000_E" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!ba620088", "channel_id": "Madrid", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1996699528, "to": 798281372, "id": 3428568518, "rx_time": 1759871852, "rx_snr": 1.5, "rx_rssi": -108, "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": 136, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213737303333373838121a4c4d32355f4361c3b161766572616c5f543130306520f09f9ab61a04f09f9ab62206d2b1770337882847422065ab4e3ade277d7b03809bfafd43b0f4229bdaf3ce7d7731c14abcd134b64e7a4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!77033788", "long_name": "LM25_Cañaveral_T100e 🚶", "short_name": "🚶", "macaddr": "0rF3AzeI", "hw_model": "TRACKER_T1000_E", "public_key": "ZatOOt4nfXsDgJv6/UOw9CKb2vPOfXcxwUq80TS2Tno=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (91 bytes)

0a09213737303333373838121a4c4d32355f4361c3b161766572616c5f543130306520f09f9ab61a04f09f9ab62206d2b1770337882847422065ab4e3ade277d7b03809bfafd43b0f4229bdaf3ce7d7731c14abcd134b64e7a4800

Hex Analysis:

Size:	91 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 #14070796 Success

Packet Information

Payload Data

Decoded Data: