Packet #2563781

Database ID:	2563781
Mesh Packet ID:	`0x6d403f21` Used for correlation across gateways
Timestamp:	2026-09-30 20:08:04 UTC
From Node:	Jcn2 tarrega (fe39)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	EA7-MA-017 (MA17)
Channel:	SFNarrow
RSSI:	-121 dBm
SNR:	-6.5 dBm
Hop Info:	3/4 hops Start: 4, Limit: 1
Relay Node:	`90` MA02 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Long Name:	Jcn2 tarrega
Short Name:	fe39
Node ID:	!97d2fe39
MAC Address:	xkyX0v45
Hardware:	NRF52_PROMICRO_DIY

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:	77 bytes
Gateway:	!84087374
Channel:	SFNarrow
Payload Type:	NODEINFO_APP
Hop Count:	3 / 4

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: SFNarrow
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!84087374` Node ID format
`channel_id`	`SFNarrow`
`packet`	`MeshPacket` (77 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`2547187257` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`NODEINFO_APP` NODEINFO_APP	enum
`decoded.payload_length`	`77` bytes	size
`hop_limit`	`1` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-121.0` dBm Signal strength at gateway	int32
`rx_snr`	`-6.50` dB Signal quality at gateway	float
`rx_time`	`1790798881` 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`	`32` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`144` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	Not set	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: SFNarrow
✓ Gateway node ID tracked

Exposure Risks:

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

MQTT-Specific Fields

Gateway ID:	`!84087374`
Signal Metrics:	RSSI: -121.0 dBm SNR: -6.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	77 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!97d2fe39", "long_name": "Jcn2 tarrega", "short_name": "fe39", "macaddr": "xkyX0v45", "hw_model": "NRF52_PROMICRO_DIY" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 2547187257, "to": 4294967295, "channel": 32, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhOTdkMmZlMzkSDEpjbjIgdGFycmVnYRoEZmUzOSIGxkyX0v45KD9CIFdstQ1N6DU04/oOjqnfhQsXtYoG+nDwiB5BMDXIUnRYSAA=", "bitfield": 1 }, "id": 1832927009, "rx_time": 1790798881, "rx_snr": -6.5, "hop_limit": 1, "rx_rssi": -121, "hop_start": 4, "relay_node": 144, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "SFNarrow", "gateway_id": "!84087374" }, "mesh_packet": { "from": 2547187257, "to": 4294967295, "channel": 32, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhOTdkMmZlMzkSDEpjbjIgdGFycmVnYRoEZmUzOSIGxkyX0v45KD9CIFdstQ1N6DU04/oOjqnfhQsXtYoG+nDwiB5BMDXIUnRYSAA=", "bitfield": 1, "parsed_payload": { "id": "!97d2fe39", "long_name": "Jcn2 tarrega", "short_name": "fe39", "macaddr": "xkyX0v45", "hw_model": "NRF52_PROMICRO_DIY", "public_key": "V2y1DU3oNTTj+g6Oqd+FCxe1igb6cPCIHkEwNchSdFg=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } }, "id": 1832927009, "rx_time": 1790798881, "rx_snr": -6.5, "hop_limit": 1, "rx_rssi": -121, "hop_start": 4, "relay_node": 144, "transport_mechanism": "TRANSPORT_LORA" } }

Raw Packet Data (77 bytes)

0a09213937643266653339120c4a636e3220746172726567611a04666533392206c64c97d2fe39283f4220576cb50d4de83534e3fa0e8ea9df850b17b58a06fa70f0881e413035c85274584800

Hex Analysis:

Size:	77 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 #2563781 Success

Packet Information

Payload Data

Decoded Data: