Packet #26357896

Database ID:	26357896
Mesh Packet ID:	`0x8703e7bb` Used for correlation across gateways
Timestamp:	2025-12-08 11:23:13 UTC
From Node:	Carabanchy (CRBN)
To Node:	2zz ☀ (03bb)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Mec Rocket Meco (MRM)
Channel:	MediumFast
RSSI:	-111 dBm
SNR:	-9.5 dBm
Hop Info:	3/7 hops Start: 7, Limit: 4
Relay Node:	`fc` 74fc , Anu2 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	Espipon
Short Name:	ALEX
Node ID:	!f9b39340
MAC Address:	8CT5s5NA
Hardware:	TLORA_V2_1_1P6

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:	72 bytes
Gateway:	!a0ca8798
Channel:	MediumFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 7

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 (3 hops)
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!a0ca8798` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (72 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`4189295424` Source node ID	uint32
`to`	`1761936315` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`72` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-111.0` dBm Signal strength at gateway	int32
`rx_snr`	`-9.50` dB Signal quality at gateway	float
`rx_time`	`1765192992` 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`	`56` Next hop node ID	uint32
`relay_node`	`252` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765192993.6281128` 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: MediumFast
✓ Gateway node ID tracked

Exposure Risks:

⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!a0ca8798`
Signal Metrics:	RSSI: -111.0 dBm SNR: -9.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	72 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!f9b39340", "long_name": "Espipon", "short_name": "ALEX", "macaddr": "8CT5s5NA", "hw_model": "TLORA_V2_1_1P6" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a0ca8798", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 4189295424, "to": 1761936315, "id": 2265180091, "rx_time": 1765192992, "rx_snr": -9.5, "rx_rssi": -111, "hop_limit": 4, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 56, "relay_node": 252, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216639623339333430120745737069706f6e1a04414c45582206f024f9b3934028034220a70040324dd66388cb430d99003800cf4a3de592568edfecbe37513a66ef58644800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!f9b39340", "long_name": "Espipon", "short_name": "ALEX", "macaddr": "8CT5s5NA", "hw_model": "TLORA_V2_1_1P6", "public_key": "pwBAMk3WY4jLQw2ZADgAz0o95ZJWjt/svjdROmbvWGQ=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (72 bytes)

0a09216639623339333430120745737069706f6e1a04414c45582206f024f9b3934028034220a70040324dd66388cb430d99003800cf4a3de592568edfecbe37513a66ef58644800

Hex Analysis:

Size:	72 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 #26357896 Success

Packet Information

Payload Data

Decoded Data: