Packet #816981

Database ID:	816981
Mesh Packet ID:	`0x1b9d455c` Used for correlation across gateways
Timestamp:	2025-10-15 10:02:33 UTC
From Node:	Astoria Meshtastic 002 (AMR2)
To Node:	Pizza Rat (264e)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	DRP0 Astoria (DRP0)
Channel:	LongFast
RSSI:	-106 dBm
SNR:	-6.25 dBm
Hop Info:	-4/0 hops Start: 0, Limit: 4
Relay Node:	None

Long Name:	Astoria Meshtastic 002
Short Name:	AMR2
Node ID:	!e8ac25fe
MAC Address:	6eDorCX+
Hardware:	RAK4631

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:	51 bytes
Gateway:	!16c3f47c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	-4 / Unknown

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!16c3f47c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (51 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3903596030` Source node ID	uint32
`to`	`4274464334` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`51` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	Not set	uint32
`hops_taken`	`-4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-106.0` dBm Signal strength at gateway	int32
`rx_snr`	`-6.25` dB Signal quality at gateway	float
`rx_time`	`1760522577` 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`	Not set	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760522553.2416072` 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

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (-4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!16c3f47c`
Signal Metrics:	RSSI: -106.0 dBm SNR: -6.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	51 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!e8ac25fe", "long_name": "Astoria Meshtastic 002", "short_name": "AMR2", "macaddr": "6eDorCX+", "hw_model": "RAK4631" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!16c3f47c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3903596030, "to": 4274464334, "id": 463291740, "rx_time": 1760522577, "rx_snr": -6.25, "rx_rssi": -106, "hop_limit": 4, "hop_start": 0, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921653861633235666512164173746f726961204d657368746173746963203030321a04414d52322206e9e0e8ac25fe2809", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!e8ac25fe", "long_name": "Astoria Meshtastic 002", "short_name": "AMR2", "macaddr": "6eDorCX+", "hw_model": "RAK4631", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (51 bytes)

0a0921653861633235666512164173746f726961204d657368746173746963203030321a04414d52322206e9e0e8ac25fe2809

Hex Analysis:

Size:	51 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 #816981 Success

Packet Information

Payload Data

Decoded Data: